Adding upstream version 1.1.1.upstream/1.1.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 4356 insertions, 0 deletions

diff --git a/schema/mysql/schema.sql b/schema/mysql/schema.sql
new file mode 100644
index 0000000..f4434f1
--- /dev/null
+++ b/schema/mysql/schema.sql
@@ -0,0 +1,1346 @@
+-- IcingaDB | (c) 2019 Icinga GmbH | GPLv2+
+
+SET SESSION sql_mode = 'STRICT_ALL_TABLES,NO_ENGINE_SUBSTITUTION';
+SET SESSION innodb_strict_mode = 1;
+
+DROP FUNCTION IF EXISTS get_sla_ok_percent;
+DELIMITER //
+CREATE FUNCTION get_sla_ok_percent(
+  in_host_id binary(20),
+  in_service_id binary(20),
+  in_start_time bigint unsigned,
+  in_end_time bigint unsigned
+)
+RETURNS decimal(7, 4)
+READS SQL DATA
+BEGIN
+  DECLARE result decimal(7, 4);
+  DECLARE row_event_time bigint unsigned;
+  DECLARE row_event_type enum('state_change', 'downtime_start', 'downtime_end', 'end');
+  DECLARE row_event_prio int;
+  DECLARE row_hard_state tinyint unsigned;
+  DECLARE row_previous_hard_state tinyint unsigned;
+  DECLARE last_event_time bigint unsigned;
+  DECLARE last_hard_state tinyint unsigned;
+  DECLARE active_downtimes int unsigned;
+  DECLARE problem_time bigint unsigned;
+  DECLARE total_time bigint unsigned;
+  DECLARE done int;
+  DECLARE cur CURSOR FOR
+    (
+      -- all downtime_start events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        GREATEST(downtime_start, in_start_time) AS event_time,
+        'downtime_start' AS event_type,
+        1 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+    ) UNION ALL (
+      -- all downtime_end events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        downtime_end AS event_time,
+        'downtime_end' AS event_type,
+        2 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+        AND d.downtime_end < in_end_time
+    ) UNION ALL (
+      -- all state events strictly in interval
+      SELECT
+        event_time,
+        'state_change' AS event_type,
+        0 AS event_prio,
+        hard_state,
+        previous_hard_state
+      FROM sla_history_state s
+      WHERE s.host_id = in_host_id
+        AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+        AND s.event_time > in_start_time
+        AND s.event_time < in_end_time
+    ) UNION ALL (
+      -- end event to keep loop simple, values are not used
+      SELECT
+        in_end_time AS event_time,
+        'end' AS event_type,
+        3 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+    )
+    ORDER BY event_time, event_prio;
+  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
+
+  IF in_end_time <= in_start_time THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'end time must be greater than start time';
+  END IF;
+
+  -- Use the latest event at or before the beginning of the SLA interval as the initial state.
+  SELECT hard_state INTO last_hard_state
+  FROM sla_history_state s
+  WHERE s.host_id = in_host_id
+    AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+    AND s.event_time <= in_start_time
+  ORDER BY s.event_time DESC
+  LIMIT 1;
+
+  -- If this does not exist, use the previous state from the first event after the beginning of the SLA interval.
+  IF last_hard_state IS NULL THEN
+    SELECT previous_hard_state INTO last_hard_state
+    FROM sla_history_state s
+    WHERE s.host_id = in_host_id
+      AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+      AND s.event_time > in_start_time
+    ORDER BY s.event_time ASC
+    LIMIT 1;
+  END IF;
+
+  -- If this also does not exist, use the current host/service state.
+  IF last_hard_state IS NULL THEN
+    IF in_service_id IS NULL THEN
+      SELECT hard_state INTO last_hard_state
+      FROM host_state s
+      WHERE s.host_id = in_host_id;
+    ELSE
+      SELECT hard_state INTO last_hard_state
+      FROM service_state s
+      WHERE s.host_id = in_host_id
+        AND s.service_id = in_service_id;
+    END IF;
+  END IF;
+
+  IF last_hard_state IS NULL THEN
+    SET last_hard_state = 0;
+  END IF;
+
+  SET problem_time = 0;
+  SET total_time = in_end_time - in_start_time;
+  SET last_event_time = in_start_time;
+  SET active_downtimes = 0;
+
+  SET done = 0;
+  OPEN cur;
+  read_loop: LOOP
+    FETCH cur INTO row_event_time, row_event_type, row_event_prio, row_hard_state, row_previous_hard_state;
+    IF done THEN
+      LEAVE read_loop;
+    END IF;
+
+    IF row_previous_hard_state = 99 THEN
+      SET total_time = total_time - (row_event_time - last_event_time);
+    ELSEIF ((in_service_id IS NULL AND last_hard_state > 0) OR (in_service_id IS NOT NULL AND last_hard_state > 1))
+      AND last_hard_state != 99
+      AND active_downtimes = 0
+    THEN
+      SET problem_time = problem_time + row_event_time - last_event_time;
+    END IF;
+
+    SET last_event_time = row_event_time;
+    IF row_event_type = 'state_change' THEN
+      SET last_hard_state = row_hard_state;
+    ELSEIF row_event_type = 'downtime_start' THEN
+      SET active_downtimes = active_downtimes + 1;
+    ELSEIF row_event_type = 'downtime_end' THEN
+      SET active_downtimes = active_downtimes - 1;
+    END IF;
+  END LOOP;
+  CLOSE cur;
+
+  SET result = 100 * (total_time - problem_time) / total_time;
+  RETURN result;
+END//
+DELIMITER ;
+
+CREATE TABLE host (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  address varchar(255) NOT NULL,
+  address6 varchar(255) NOT NULL,
+  address_bin binary(4) DEFAULT NULL,
+  address6_bin binary(16) DEFAULT NULL,
+
+  checkcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'checkcommand.name',
+  checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+
+  max_check_attempts int unsigned NOT NULL,
+
+  check_timeperiod_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'timeperiod.name',
+  check_timeperiod_id binary(20) DEFAULT NULL COMMENT 'timeperiod.id',
+
+  check_timeout int unsigned DEFAULT NULL,
+  check_interval int unsigned NOT NULL,
+  check_retry_interval int unsigned NOT NULL,
+
+  active_checks_enabled enum('n', 'y') NOT NULL,
+  passive_checks_enabled enum('n', 'y') NOT NULL,
+  event_handler_enabled enum('n', 'y') NOT NULL,
+  notifications_enabled enum('n', 'y') NOT NULL,
+
+  flapping_enabled enum('n', 'y') NOT NULL,
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  perfdata_enabled enum('n', 'y') NOT NULL,
+
+  eventcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'eventcommand.name',
+  eventcommand_id binary(20) DEFAULT NULL COMMENT 'eventcommand.id',
+
+  is_volatile enum('n', 'y') NOT NULL,
+
+  action_url_id binary(20) DEFAULT NULL COMMENT 'action_url.id',
+  notes_url_id binary(20) DEFAULT NULL COMMENT 'notes_url.id',
+  notes text NOT NULL,
+  icon_image_id binary(20) DEFAULT NULL COMMENT 'icon_image.id',
+  icon_image_alt varchar(32) NOT NULL,
+
+  zone_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'zone.name',
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  command_endpoint_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'endpoint.name',
+  command_endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+
+  PRIMARY KEY (id),
+  KEY idx_action_url_checksum (action_url_id) COMMENT 'cleanup',
+  KEY idx_notes_url_checksum (notes_url_id) COMMENT 'cleanup',
+  KEY idx_icon_image_checksum (icon_image_id) COMMENT 'cleanup',
+
+  INDEX idx_host_display_name (display_name) COMMENT 'Host list filtered/ordered by display_name',
+  INDEX idx_host_name_ci (name_ci) COMMENT 'Host list filtered using quick search',
+  INDEX idx_host_name (name) COMMENT 'Host list filtered/ordered by name; Host detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE hostgroup (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_hostgroup_display_name (display_name) COMMENT 'Hostgroup list filtered/ordered by display_name',
+  INDEX idx_hostgroup_name_ci (name_ci) COMMENT 'Hostgroup list filtered using quick search',
+  INDEX idx_hostgroup_name (name) COMMENT 'Host/service/host group list filtered by host group name; Hostgroup detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE hostgroup_member (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + host_id + hostgroup_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  hostgroup_id binary(20) NOT NULL COMMENT 'hostgroup.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_hostgroup_member_host_id (host_id, hostgroup_id),
+  INDEX idx_hostgroup_member_hostgroup_id (hostgroup_id, host_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE host_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + host_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_host_customvar_host_id (host_id, customvar_id),
+  INDEX idx_host_customvar_customvar_id (customvar_id, host_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE hostgroup_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + hostgroup_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  hostgroup_id binary(20) NOT NULL COMMENT 'hostgroup.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_hostgroup_customvar_hostgroup_id (hostgroup_id, customvar_id),
+  INDEX idx_hostgroup_customvar_customvar_id (customvar_id, hostgroup_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE host_state (
+  id binary(20) NOT NULL COMMENT 'host.id',
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  state_type enum('hard', 'soft') NOT NULL,
+  soft_state tinyint unsigned NOT NULL,
+  hard_state tinyint unsigned NOT NULL,
+  previous_soft_state tinyint unsigned NOT NULL,
+  previous_hard_state tinyint unsigned NOT NULL,
+  check_attempt tinyint unsigned NOT NULL,
+  severity smallint unsigned NOT NULL,
+
+  output longtext DEFAULT NULL,
+  long_output longtext DEFAULT NULL,
+  performance_data longtext DEFAULT NULL,
+  normalized_performance_data longtext DEFAULT NULL,
+  check_commandline text DEFAULT NULL,
+
+  is_problem enum('n', 'y') NOT NULL,
+  is_handled enum('n', 'y') NOT NULL,
+  is_reachable enum('n', 'y') NOT NULL,
+  is_flapping enum('n', 'y') NOT NULL,
+  is_overdue enum('n', 'y') NOT NULL,
+
+  is_acknowledged enum('n', 'y', 'sticky') NOT NULL,
+  acknowledgement_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id',
+  last_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id',
+
+  in_downtime enum('n', 'y') NOT NULL,
+
+  execution_time int unsigned DEFAULT NULL,
+  latency int unsigned DEFAULT NULL,
+  check_timeout int unsigned DEFAULT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  last_update bigint unsigned DEFAULT NULL,
+  last_state_change bigint unsigned NOT NULL,
+  next_check bigint unsigned NOT NULL,
+  next_update bigint unsigned NOT NULL,
+
+  PRIMARY KEY (id),
+
+  UNIQUE INDEX idx_host_state_host_id (host_id),
+  INDEX idx_host_state_is_problem (is_problem, severity) COMMENT 'Host list filtered by is_problem ordered by severity',
+  INDEX idx_host_state_severity (severity) COMMENT 'Host list filtered/ordered by severity',
+  INDEX idx_host_state_soft_state (soft_state, last_state_change) COMMENT 'Host list filtered/ordered by soft_state; recently recovered filter',
+  INDEX idx_host_state_last_state_change (last_state_change) COMMENT 'Host list filtered/ordered by last_state_change'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE service (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+  host_id binary(20) NOT NULL COMMENT 'sha1(host.id)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  checkcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'checkcommand.name',
+  checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+
+  max_check_attempts int unsigned NOT NULL,
+
+  check_timeperiod_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'timeperiod.name',
+  check_timeperiod_id binary(20) DEFAULT NULL COMMENT 'timeperiod.id',
+
+  check_timeout int unsigned DEFAULT NULL,
+  check_interval int unsigned NOT NULL,
+  check_retry_interval int unsigned NOT NULL,
+
+  active_checks_enabled enum('n', 'y') NOT NULL,
+  passive_checks_enabled enum('n', 'y') NOT NULL,
+  event_handler_enabled enum('n', 'y') NOT NULL,
+  notifications_enabled enum('n', 'y') NOT NULL,
+
+  flapping_enabled enum('n', 'y') NOT NULL,
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  perfdata_enabled enum('n', 'y') NOT NULL,
+
+  eventcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'eventcommand.name',
+  eventcommand_id binary(20) DEFAULT NULL COMMENT 'eventcommand.id',
+
+  is_volatile enum('n', 'y') NOT NULL,
+
+  action_url_id binary(20) DEFAULT NULL COMMENT 'action_url.id',
+  notes_url_id binary(20) DEFAULT NULL COMMENT 'notes_url.id',
+  notes text NOT NULL,
+  icon_image_id binary(20) DEFAULT NULL COMMENT 'icon_image.id',
+  icon_image_alt varchar(32) NOT NULL,
+
+  zone_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'zone.name',
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  command_endpoint_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'endpoint.name',
+  command_endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_service_display_name (display_name) COMMENT 'Service list filtered/ordered by display_name',
+  INDEX idx_service_host_id (host_id, display_name) COMMENT 'Service list filtered by host and ordered by display_name',
+  INDEX idx_service_name_ci (name_ci) COMMENT 'Service list filtered using quick search',
+  INDEX idx_service_name (name) COMMENT 'Service list filtered/ordered by name; Service detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE servicegroup (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_servicegroup_display_name (display_name) COMMENT 'Servicegroup list filtered/ordered by display_name',
+  INDEX idx_servicegroup_name_ci (name_ci) COMMENT 'Servicegroup list filtered using quick search',
+  INDEX idx_servicegroup_name (name) COMMENT 'Host/service/service group list filtered by service group name; Servicegroup detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE servicegroup_member (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + servicegroup_id + service_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  service_id binary(20) NOT NULL COMMENT 'service.id',
+  servicegroup_id binary(20) NOT NULL COMMENT 'servicegroup.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_servicegroup_member_service_id (service_id, servicegroup_id),
+  INDEX idx_servicegroup_member_servicegroup_id (servicegroup_id, service_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE service_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + service_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  service_id binary(20) NOT NULL COMMENT 'service.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+
+  INDEX idx_service_customvar_service_id (service_id, customvar_id),
+  INDEX idx_service_customvar_customvar_id (customvar_id, service_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE servicegroup_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + servicegroup_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  servicegroup_id binary(20) NOT NULL COMMENT 'servicegroup.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_servicegroup_customvar_servicegroup_id (servicegroup_id, customvar_id),
+  INDEX idx_servicegroup_customvar_customvar_id (customvar_id, servicegroup_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE service_state (
+  id binary(20) NOT NULL COMMENT 'service.id',
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) NOT NULL COMMENT 'service.id',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  state_type enum('hard', 'soft') NOT NULL,
+  soft_state tinyint unsigned NOT NULL,
+  hard_state tinyint unsigned NOT NULL,
+  previous_soft_state tinyint unsigned NOT NULL,
+  previous_hard_state tinyint unsigned NOT NULL,
+  check_attempt tinyint unsigned NOT NULL,
+  severity smallint unsigned NOT NULL,
+
+  output longtext DEFAULT NULL,
+  long_output longtext DEFAULT NULL,
+  performance_data longtext DEFAULT NULL,
+  normalized_performance_data longtext DEFAULT NULL,
+
+  check_commandline text DEFAULT NULL,
+
+  is_problem enum('n', 'y') NOT NULL,
+  is_handled enum('n', 'y') NOT NULL,
+  is_reachable enum('n', 'y') NOT NULL,
+  is_flapping enum('n', 'y') NOT NULL,
+  is_overdue enum('n', 'y') NOT NULL,
+
+  is_acknowledged enum('n', 'y', 'sticky') NOT NULL,
+  acknowledgement_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id',
+  last_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id',
+
+  in_downtime enum('n', 'y') NOT NULL,
+
+  execution_time int unsigned DEFAULT NULL,
+  latency int unsigned DEFAULT NULL,
+  check_timeout int unsigned DEFAULT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  last_update bigint unsigned DEFAULT NULL,
+  last_state_change bigint unsigned NOT NULL,
+  next_check bigint unsigned NOT NULL,
+  next_update bigint unsigned NOT NULL,
+
+  PRIMARY KEY (id),
+
+  UNIQUE INDEX idx_service_state_service_id (service_id),
+  INDEX idx_service_state_is_problem (is_problem, severity) COMMENT 'Service list filtered by is_problem ordered by severity',
+  INDEX idx_service_state_severity (severity) COMMENT 'Service list filtered/ordered by severity',
+  INDEX idx_service_state_soft_state (soft_state, last_state_change) COMMENT 'Service list filtered/ordered by soft_state; recently recovered filter',
+  INDEX idx_service_state_last_state_change (last_state_change) COMMENT 'Service list filtered/ordered by last_state_change'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE endpoint (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  zone_id binary(20) NOT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE environment (
+  id binary(20) NOT NULL COMMENT 'sha1(Icinga CA public key)',
+  name varchar(255) NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE icingadb_instance (
+  id binary(16) NOT NULL COMMENT 'UUIDv4',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  heartbeat bigint unsigned NOT NULL COMMENT '*nix timestamp',
+  responsible enum('n', 'y') NOT NULL,
+
+  icinga2_version varchar(255) NOT NULL,
+  icinga2_start_time bigint unsigned NOT NULL,
+  icinga2_notifications_enabled enum('n', 'y') NOT NULL,
+  icinga2_active_service_checks_enabled enum('n', 'y') NOT NULL,
+  icinga2_active_host_checks_enabled enum('n', 'y') NOT NULL,
+  icinga2_event_handlers_enabled enum('n', 'y') NOT NULL,
+  icinga2_flap_detection_enabled enum('n', 'y') NOT NULL,
+  icinga2_performance_data_enabled enum('n', 'y') NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE checkcommand (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  command text NOT NULL,
+  timeout int unsigned NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE checkcommand_argument (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + argument_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override varchar(64) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
+  repeat_key enum('n', 'y') NOT NULL,
+  required enum('n', 'y') NOT NULL,
+  set_if varchar(255) DEFAULT NULL,
+  `separator` varchar(255) DEFAULT NULL,
+  skip_key enum('n', 'y') NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE checkcommand_envvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + envvar_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  envvar_value text NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE checkcommand_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+
+  checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_checkcommand_customvar_checkcommand_id (checkcommand_id, customvar_id),
+  INDEX idx_checkcommand_customvar_customvar_id (customvar_id, checkcommand_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+
+CREATE TABLE eventcommand (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  command text NOT NULL,
+  timeout smallint unsigned NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE eventcommand_argument (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + argument_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override varchar(64) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
+  repeat_key enum('n', 'y') NOT NULL,
+  required enum('n', 'y') NOT NULL,
+  set_if varchar(255) DEFAULT NULL,
+  `separator` varchar(255) DEFAULT NULL,
+  skip_key enum('n', 'y') NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE eventcommand_envvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + envvar_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  envvar_value text NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE eventcommand_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_eventcommand_customvar_eventcommand_id (eventcommand_id, customvar_id),
+  INDEX idx_eventcommand_customvar_customvar_id (customvar_id, eventcommand_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notificationcommand (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  command text NOT NULL,
+  timeout smallint unsigned NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notificationcommand_argument (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + argument_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override varchar(64) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
+  repeat_key enum('n', 'y') NOT NULL,
+  required enum('n', 'y') NOT NULL,
+  set_if varchar(255) DEFAULT NULL,
+  `separator` varchar(255) DEFAULT NULL,
+  skip_key enum('n', 'y') NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notificationcommand_envvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + envvar_key)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  envvar_value text NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notificationcommand_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notificationcommand_customvar_notificationcommand_id (notificationcommand_id, customvar_id),
+  INDEX idx_notificationcommand_customvar_customvar_id (customvar_id, notificationcommand_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE comment (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL,
+  name varchar(548) NOT NULL COMMENT '255+1+255+1+36, i.e. "host.name!service.name!UUID"',
+
+  author varchar(255) NOT NULL COLLATE utf8mb4_unicode_ci,
+  text text NOT NULL,
+  entry_type enum('comment','ack') NOT NULL,
+  entry_time bigint unsigned NOT NULL,
+  is_persistent enum('n', 'y') NOT NULL,
+  is_sticky enum('n', 'y') NOT NULL,
+  expire_time bigint unsigned DEFAULT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_comment_name (name) COMMENT 'Comment detail filter',
+  INDEX idx_comment_entry_time (entry_time) COMMENT 'Comment list fileted/ordered by entry_time',
+  INDEX idx_comment_author (author) COMMENT 'Comment list filtered/ordered by author',
+  INDEX idx_comment_expire_time (expire_time) COMMENT 'Comment list filtered/ordered by expire_time'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE downtime (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+
+  triggered_by_id binary(20) DEFAULT NULL COMMENT 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.',
+  parent_id binary(20) DEFAULT NULL COMMENT 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+  name varchar(548) NOT NULL COMMENT '255+1+255+1+36, i.e. "host.name!service.name!UUID"',
+
+  author varchar(255) NOT NULL COLLATE utf8mb4_unicode_ci,
+  comment text NOT NULL,
+  entry_time bigint unsigned NOT NULL,
+  scheduled_start_time bigint unsigned NOT NULL,
+  scheduled_end_time bigint unsigned NOT NULL,
+  scheduled_duration bigint unsigned NOT NULL,
+  is_flexible enum('n', 'y') NOT NULL,
+  flexible_duration bigint unsigned NOT NULL,
+
+  is_in_effect enum('n', 'y') NOT NULL,
+  start_time bigint unsigned DEFAULT NULL COMMENT 'Time when the host went into a problem state during the downtimes timeframe',
+  end_time bigint unsigned DEFAULT NULL COMMENT 'Problem state assumed: scheduled_end_time if fixed, start_time + flexible_duration otherwise',
+  duration bigint unsigned NOT NULL COMMENT 'Duration of the downtime: When the downtime is flexible, this is the same as flexible_duration otherwise scheduled_duration',
+  scheduled_by varchar(767) DEFAULT NULL COMMENT 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"',
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_downtime_is_in_effect (is_in_effect, start_time) COMMENT 'Downtime list filtered/ordered by severity',
+  INDEX idx_downtime_name (name) COMMENT 'Downtime detail filter',
+  INDEX idx_downtime_entry_time (entry_time) COMMENT 'Downtime list filtered/ordered by entry_time',
+  INDEX idx_downtime_start_time (start_time) COMMENT 'Downtime list filtered/ordered by start_time',
+  INDEX idx_downtime_end_time (end_time) COMMENT 'Downtime list filtered/ordered by end_time',
+  INDEX idx_downtime_scheduled_start_time (scheduled_start_time) COMMENT 'Downtime list filtered/ordered by scheduled_start_time',
+  INDEX idx_downtime_scheduled_end_time (scheduled_end_time) COMMENT 'Downtime list filtered/ordered by scheduled_end_time',
+  INDEX idx_downtime_author (author) COMMENT 'Downtime list filtered/ordered by author',
+  INDEX idx_downtime_duration (duration) COMMENT 'Downtime list filtered/ordered by duration'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL,
+
+  name varchar(767) NOT NULL COMMENT '255+1+255+1+255, i.e. "host.name!service.name!notification.name"',
+  name_ci varchar(767) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+  notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+
+  times_begin int unsigned DEFAULT NULL,
+  times_end int unsigned DEFAULT NULL,
+  notification_interval int unsigned NOT NULL,
+  timeperiod_id binary(20) DEFAULT NULL COMMENT 'timeperiod.id',
+
+  states tinyint unsigned NOT NULL,
+  types smallint unsigned NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_host_id (host_id),
+  INDEX idx_notification_service_id (service_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification_user (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + user_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notification_id binary(20) NOT NULL COMMENT 'notification.id',
+  user_id binary(20) NOT NULL COMMENT 'user.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_user_user_id (user_id, notification_id),
+  INDEX idx_notification_user_notification_id (notification_id, user_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification_usergroup (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + usergroup_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notification_id binary(20) NOT NULL COMMENT 'notification.id',
+  usergroup_id binary(20) NOT NULL COMMENT 'usergroup.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_usergroup_usergroup_id (usergroup_id, notification_id),
+  INDEX idx_notification_usergroup_notification_id (notification_id, usergroup_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification_recipient (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + (user_id | usergroup_id))',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notification_id binary(20) NOT NULL COMMENT 'notification.id',
+  user_id binary(20) NULL COMMENT 'user.id',
+  usergroup_id binary(20) NULL COMMENT 'usergroup.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_recipient_user_id (user_id, notification_id),
+  INDEX idx_notification_recipient_notification_id_user (notification_id, user_id),
+  INDEX idx_notification_recipient_usergroup_id (usergroup_id, notification_id),
+  INDEX idx_notification_recipient_notification_id_usergroup (notification_id, usergroup_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notification_id binary(20) NOT NULL COMMENT 'notification.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_customvar_notification_id (notification_id, customvar_id),
+  INDEX idx_notification_customvar_customvar_id (customvar_id, notification_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE icon_image (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + icon_image)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  icon_image text COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  PRIMARY KEY (id),
+  KEY idx_icon_image (icon_image(255))
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE action_url (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + action_url)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  action_url text COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  PRIMARY KEY (id),
+  KEY idx_action_url (action_url(255))
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notes_url (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + notes_url)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notes_url text COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  PRIMARY KEY (id),
+  KEY idx_notes_url (notes_url(255))
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE timeperiod (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  prefer_includes enum('n', 'y') NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE timeperiod_range (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + range_id + timeperiod_id)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  timeperiod_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+  range_key varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  range_value varchar(255) NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE timeperiod_override_include (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + include_id + timeperiod_id)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  timeperiod_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+  override_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE timeperiod_override_exclude (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + exclude_id + timeperiod_id)',
+  environment_id binary(20) NOT NULL COMMENT 'env.id',
+  timeperiod_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+  override_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE timeperiod_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + timeperiod_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  timeperiod_id binary(20) NOT NULL COMMENT 'timeperiod.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_timeperiod_customvar_timeperiod_id (timeperiod_id, customvar_id),
+  INDEX idx_timeperiod_customvar_customvar_id (customvar_id, timeperiod_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name + value)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+
+  name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  value text NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE customvar_flat (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + flatname + flatvalue)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  customvar_id binary(20) NOT NULL COMMENT 'sha1(customvar.id)',
+  flatname_checksum binary(20) NOT NULL COMMENT 'sha1(flatname after conversion)',
+
+  flatname varchar(512) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'Path converted with `.` and `[ ]`',
+  flatvalue text DEFAULT NULL,
+
+  PRIMARY KEY (id),
+
+  INDEX idx_customvar_flat_customvar_id (customvar_id),
+  INDEX idx_customvar_flat_flatname_flatvalue (flatname, flatvalue(255)) COMMENT 'Lists filtered by custom variable'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE user (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  email varchar(255) NOT NULL,
+  pager varchar(255) NOT NULL,
+
+  notifications_enabled enum('n', 'y') NOT NULL,
+
+  timeperiod_id binary(20) DEFAULT NULL COMMENT 'timeperiod.id',
+
+  states tinyint unsigned NOT NULL,
+  types smallint unsigned NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_user_display_name (display_name) COMMENT 'User list filtered/ordered by display_name',
+  INDEX idx_user_name_ci (name_ci) COMMENT 'User list filtered using quick search',
+  INDEX idx_user_name (name) COMMENT 'User list filtered/ordered by name; User detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE usergroup (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+  display_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  zone_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_usergroup_display_name (display_name) COMMENT 'Usergroup list filtered/ordered by display_name',
+  INDEX idx_usergroup_name_ci (name_ci) COMMENT 'Usergroup list filtered using quick search',
+  INDEX idx_usergroup_name (name) COMMENT 'Usergroup list filtered/ordered by name; Usergroup detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE usergroup_member (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + usergroup_id + user_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  user_id binary(20) NOT NULL COMMENT 'user.id',
+  usergroup_id binary(20) NOT NULL COMMENT 'usergroup.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_usergroup_member_user_id (user_id, usergroup_id),
+  INDEX idx_usergroup_member_usergroup_id (usergroup_id, user_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE user_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + user_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  user_id binary(20) NOT NULL COMMENT 'user.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_user_customvar_user_id (user_id, customvar_id),
+  INDEX idx_user_customvar_customvar_id (customvar_id, user_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE usergroup_customvar (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + usergroup_id + customvar_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  usergroup_id binary(20) NOT NULL COMMENT 'usergroup.id',
+  customvar_id binary(20) NOT NULL COMMENT 'customvar.id',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_usergroup_customvar_usergroup_id (usergroup_id, customvar_id),
+  INDEX idx_usergroup_customvar_customvar_id (customvar_id, usergroup_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE zone (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  name_checksum binary(20) NOT NULL COMMENT 'sha1(name)',
+  properties_checksum binary(20) NOT NULL COMMENT 'sha1(all properties)',
+
+  name varchar(255) NOT NULL,
+  name_ci varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
+
+  is_global enum('n', 'y') NOT NULL,
+  parent_id binary(20) DEFAULT NULL COMMENT 'zone.id',
+
+  depth tinyint unsigned NOT NULL,
+
+  PRIMARY KEY (id),
+
+  UNIQUE INDEX idx_environment_id_id (environment_id, id),
+  INDEX idx_zone_parent_id (parent_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE notification_history (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.name + notification.name + type + send_time)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+  notification_id binary(20) NOT NULL COMMENT 'notification.id',
+
+  type enum('downtime_start', 'downtime_end', 'downtime_removed', 'custom', 'acknowledgement', 'problem', 'recovery', 'flapping_start', 'flapping_end') NOT NULL,
+  send_time bigint unsigned NOT NULL,
+  state tinyint unsigned NOT NULL,
+  previous_hard_state tinyint unsigned NOT NULL,
+  author text NOT NULL,
+  `text` longtext NOT NULL,
+  users_notified smallint unsigned NOT NULL,
+
+  PRIMARY KEY (id),
+
+  INDEX idx_notification_history_send_time (send_time DESC) COMMENT 'Notification list filtered/ordered by send_time',
+  INDEX idx_notification_history_env_send_time (environment_id, send_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE user_notification_history (
+  id binary(20) NOT NULL COMMENT 'sha1(notification_history_id + user_id)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  notification_history_id binary(20) NOT NULL COMMENT 'UUID notification_history.id',
+  user_id binary(20) NOT NULL COMMENT 'user.id',
+
+  PRIMARY KEY (id),
+
+  CONSTRAINT fk_user_notification_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE state_history (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.name + host|service.name + event_time)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  event_time bigint unsigned NOT NULL,
+  state_type enum('hard', 'soft') NOT NULL,
+  soft_state tinyint unsigned NOT NULL,
+  hard_state tinyint unsigned NOT NULL,
+  previous_soft_state tinyint unsigned NOT NULL,
+  previous_hard_state tinyint unsigned NOT NULL,
+  check_attempt tinyint unsigned NOT NULL,
+  output longtext DEFAULT NULL,
+  long_output longtext DEFAULT NULL,
+  max_check_attempts int unsigned NOT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  PRIMARY KEY (id),
+
+  INDEX idx_state_history_env_event_time (environment_id, event_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE downtime_history (
+  downtime_id binary(20) NOT NULL COMMENT 'downtime.id',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  triggered_by_id binary(20) DEFAULT NULL COMMENT 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.',
+  parent_id binary(20) DEFAULT NULL COMMENT 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  entry_time bigint unsigned NOT NULL,
+  author varchar(255) NOT NULL COLLATE utf8mb4_unicode_ci,
+  cancelled_by varchar(255) DEFAULT NULL COLLATE utf8mb4_unicode_ci,
+  comment text NOT NULL,
+  is_flexible enum('n', 'y') NOT NULL,
+  flexible_duration bigint unsigned NOT NULL,
+  scheduled_start_time bigint unsigned NOT NULL,
+  scheduled_end_time bigint unsigned NOT NULL,
+  start_time bigint unsigned NOT NULL COMMENT 'Time when the host went into a problem state during the downtimes timeframe',
+  end_time bigint unsigned NOT NULL COMMENT 'Problem state assumed: scheduled_end_time if fixed, start_time + duration otherwise',
+  scheduled_by varchar(767) DEFAULT NULL COMMENT 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"',
+  has_been_cancelled enum('n', 'y') NOT NULL,
+  trigger_time bigint unsigned NOT NULL,
+  cancel_time bigint unsigned DEFAULT NULL,
+
+  PRIMARY KEY (downtime_id),
+
+  INDEX idx_downtime_history_env_end_time (environment_id, end_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE comment_history (
+  comment_id binary(20) NOT NULL COMMENT 'comment.id',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  entry_time bigint unsigned NOT NULL,
+  author varchar(255) NOT NULL COLLATE utf8mb4_unicode_ci,
+  removed_by varchar(255) DEFAULT NULL COLLATE utf8mb4_unicode_ci,
+  comment text NOT NULL,
+  entry_type enum('comment','ack') NOT NULL,
+  is_persistent enum('n', 'y') NOT NULL,
+  is_sticky enum('n', 'y') NOT NULL,
+  expire_time bigint unsigned DEFAULT NULL,
+  remove_time bigint unsigned DEFAULT NULL,
+  has_been_removed enum('n', 'y') NOT NULL,
+
+  PRIMARY KEY (comment_id),
+
+  INDEX idx_comment_history_env_remove_time (environment_id, remove_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE flapping_history (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + "Host"|"Service" + host|service.name + start_time)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  start_time bigint unsigned NOT NULL,
+  end_time bigint unsigned DEFAULT NULL,
+  percent_state_change_start float DEFAULT NULL,
+  percent_state_change_end float DEFAULT NULL,
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  PRIMARY KEY (id),
+
+  INDEX idx_flapping_history_env_end_time (environment_id, end_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE acknowledgement_history (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.id + "Host"|"Service" + host|service.name + set_time)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  set_time bigint unsigned NOT NULL,
+  clear_time bigint unsigned DEFAULT NULL,
+  author varchar(255) DEFAULT NULL COLLATE utf8mb4_unicode_ci COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+  cleared_by varchar(255) DEFAULT NULL COLLATE utf8mb4_unicode_ci,
+  comment text DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+  expire_time bigint unsigned DEFAULT NULL,
+  is_sticky enum('n', 'y') DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+  is_persistent enum('n', 'y') DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_acknowledgement_history_env_clear_time (environment_id, clear_time) COMMENT 'Filter for history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE history (
+  id binary(20) NOT NULL COMMENT 'sha1(environment.name + event_type + x...) given that sha1(environment.name + x...) = *_history_id',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+  notification_history_id binary(20) DEFAULT NULL COMMENT 'notification_history.id',
+  state_history_id binary(20) DEFAULT NULL COMMENT 'state_history.id',
+  downtime_history_id binary(20) DEFAULT NULL COMMENT 'downtime_history.downtime_id',
+  comment_history_id binary(20) DEFAULT NULL COMMENT 'comment_history.comment_id',
+  flapping_history_id binary(20) DEFAULT NULL COMMENT 'flapping_history.id',
+  acknowledgement_history_id binary(20) DEFAULT NULL COMMENT 'acknowledgement_history.id',
+
+  -- The enum values are ordered in a way that event_type provides a meaningful sort order for history entries with
+  -- the same event_time. state_change comes first as it can cause many of the other events like trigger downtimes,
+  -- remove acknowledgements and send notifications. Similarly, notification comes last as any other event can result
+  -- in a notification. End events sort before the corresponding start events as any ack/comment/downtime/flapping
+  -- period should last for more than a millisecond, therefore, the old period ends first and then the new one starts.
+  -- The remaining types are sorted by impact and cause: comments are informative, flapping is automatic and changes
+  -- mechanics, downtimes are semi-automatic, require user action (or configuration) and change mechanics, acks are pure
+  -- user actions and change mechanics.
+  event_type enum('state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification') NOT NULL,
+  event_time bigint unsigned NOT NULL,
+
+  PRIMARY KEY (id),
+
+  CONSTRAINT fk_history_acknowledgement_history FOREIGN KEY (acknowledgement_history_id) REFERENCES acknowledgement_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_comment_history FOREIGN KEY (comment_history_id) REFERENCES comment_history (comment_id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_downtime_history FOREIGN KEY (downtime_history_id) REFERENCES downtime_history (downtime_id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_flapping_history FOREIGN KEY (flapping_history_id) REFERENCES flapping_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_state_history FOREIGN KEY (state_history_id) REFERENCES state_history (id) ON DELETE CASCADE,
+
+  INDEX idx_history_event_time (event_time) COMMENT 'History filtered/ordered by event_time',
+  INDEX idx_history_acknowledgement (acknowledgement_history_id),
+  INDEX idx_history_comment (comment_history_id),
+  INDEX idx_history_downtime (downtime_history_id),
+  INDEX idx_history_flapping (flapping_history_id),
+  INDEX idx_history_notification (notification_history_id),
+  INDEX idx_history_state (state_history_id),
+  INDEX idx_history_host_service_id (host_id, service_id, event_time) COMMENT 'Host/service history detail filter'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE sla_history_state (
+  id binary(20) NOT NULL COMMENT 'state_history.id (may reference already deleted rows)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  event_time bigint unsigned NOT NULL COMMENT 'unix timestamp the event occurred',
+  hard_state TINYINT UNSIGNED NOT NULL COMMENT 'hard state after this event',
+  previous_hard_state TINYINT UNSIGNED NOT NULL COMMENT 'hard state before this event',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_sla_history_state_event (host_id, service_id, event_time) COMMENT 'Filter for calculating the sla reports',
+  INDEX idx_sla_history_state_env_event_time (environment_id, event_time) COMMENT 'Filter for sla history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE sla_history_downtime (
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  downtime_id binary(20) NOT NULL COMMENT 'downtime.id (may reference already deleted rows)',
+  downtime_start BIGINT UNSIGNED NOT NULL COMMENT 'start time of the downtime',
+  downtime_end BIGINT UNSIGNED NOT NULL COMMENT 'end time of the downtime',
+
+  PRIMARY KEY (downtime_id),
+
+  INDEX idx_sla_history_downtime_event (host_id, service_id, downtime_start, downtime_end) COMMENT 'Filter for calculating the sla reports',
+  INDEX idx_sla_history_downtime_env_downtime_end (environment_id, downtime_end) COMMENT 'Filter for sla history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+CREATE TABLE icingadb_schema (
+  id int unsigned NOT NULL AUTO_INCREMENT,
+  version smallint unsigned NOT NULL,
+  timestamp bigint unsigned NOT NULL,
+
+  PRIMARY KEY (id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+INSERT INTO icingadb_schema (version, timestamp)
+  VALUES (4, CURRENT_TIMESTAMP() * 1000);
diff --git a/schema/mysql/upgrades/1.0.0-rc2.sql b/schema/mysql/upgrades/1.0.0-rc2.sql
new file mode 100644
index 0000000..50fb2f9
--- /dev/null
+++ b/schema/mysql/upgrades/1.0.0-rc2.sql
@@ -0,0 +1,468 @@
+ALTER TABLE host_state DROP PRIMARY KEY;
+ALTER TABLE host_state ADD COLUMN id binary(20) NOT NULL COMMENT 'host.id' FIRST;
+UPDATE host_state SET id = host_id;
+ALTER TABLE host_state ADD PRIMARY KEY (id);
+ALTER TABLE host_state ADD COLUMN properties_checksum binary(20) AFTER environment_id;
+UPDATE host_state SET properties_checksum = 0;
+ALTER TABLE host_state MODIFY COLUMN properties_checksum binary(20) COMMENT 'sha1(all properties)' NOT NULL;
+ALTER TABLE host_state ADD UNIQUE INDEX idx_host_state_host_id (host_id);
+
+ALTER TABLE service_state DROP PRIMARY KEY;
+ALTER TABLE service_state ADD COLUMN id binary(20) NOT NULL COMMENT 'service.id' FIRST;
+UPDATE service_state SET id = service_id;
+ALTER TABLE service_state ADD PRIMARY KEY (id);
+ALTER TABLE service_state ADD COLUMN properties_checksum binary(20) AFTER environment_id;
+UPDATE service_state SET properties_checksum = 0;
+ALTER TABLE service_state MODIFY COLUMN properties_checksum binary(20) COMMENT 'sha1(all properties)' NOT NULL;
+ALTER TABLE service_state ADD UNIQUE INDEX idx_service_state_service_id (service_id);
+
+ALTER TABLE downtime
+    ADD COLUMN parent_id binary(20) COMMENT 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.' AFTER triggered_by_id,
+    MODIFY COLUMN triggered_by_id binary(20) COMMENT 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.';
+ALTER TABLE downtime_history
+    ADD COLUMN parent_id binary(20) COMMENT 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.' AFTER triggered_by_id,
+    MODIFY COLUMN triggered_by_id binary(20) COMMENT 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.';
+
+ALTER TABLE checkcommand_argument MODIFY COLUMN argument_order smallint DEFAULT NULL;
+ALTER TABLE eventcommand_argument MODIFY COLUMN argument_order smallint DEFAULT NULL;
+ALTER TABLE notificationcommand_argument MODIFY COLUMN argument_order smallint DEFAULT NULL;
+
+ALTER TABLE acknowledgement_history MODIFY COLUMN id binary(20) NOT NULL COMMENT 'sha1(environment.name + "Host"|"Service" + host|service.name + set_time)';
+ALTER TABLE flapping_history MODIFY COLUMN id binary(20) NOT NULL COMMENT 'sha1(environment.name + "Host"|"Service" + host|service.name + start_time)';
+
+ALTER TABLE host ADD INDEX idx_host_name_ci (name_ci) COMMENT 'Host list filtered using quick search';
+ALTER TABLE service ADD INDEX idx_service_name_ci (name_ci) COMMENT 'Service list filtered using quick search';
+
+ALTER TABLE user ADD INDEX idx_user_name_ci (name_ci) COMMENT 'User list filtered using quick search';
+ALTER TABLE user ADD INDEX idx_user_name (name) COMMENT 'User list filtered/ordered by name; User detail filter';
+
+ALTER TABLE usergroup ADD INDEX `idx_usergroup_display_name` (`display_name`) COMMENT 'Usergroup list filtered/ordered by display_name';
+ALTER TABLE usergroup ADD INDEX idx_usergroup_name_ci (name_ci) COMMENT 'Usergroup list filtered using quick search';
+ALTER TABLE usergroup ADD INDEX idx_usergroup_name (name) COMMENT 'Usergroup list filtered/ordered by name; Usergroup detail filter';
+
+ALTER TABLE hostgroup_customvar
+    ADD INDEX idx_hostgroup_customvar_hostgroup_id (hostgroup_id, customvar_id),
+    ADD INDEX idx_hostgroup_customvar_customvar_id (customvar_id, hostgroup_id);
+ALTER TABLE servicegroup_customvar
+    ADD INDEX idx_servicegroup_customvar_servicegroup_id (servicegroup_id, customvar_id),
+    ADD INDEX idx_servicegroup_customvar_customvar_id (customvar_id, servicegroup_id);
+ALTER TABLE checkcommand_customvar
+    ADD INDEX idx_checkcommand_customvar_command_id (command_id, customvar_id),
+    ADD INDEX idx_checkcommand_customvar_customvar_id (customvar_id, command_id);
+ALTER TABLE eventcommand_customvar
+    ADD INDEX idx_eventcommand_customvar_command_id (command_id, customvar_id),
+    ADD INDEX idx_eventcommand_customvar_customvar_id (customvar_id, command_id);
+ALTER TABLE notificationcommand_customvar
+    ADD INDEX idx_notificationcommand_customvar_command_id (command_id, customvar_id),
+    ADD INDEX idx_notificationcommand_customvar_customvar_id (customvar_id, command_id);
+ALTER TABLE notification_customvar
+    ADD INDEX idx_notification_customvar_notification_id (notification_id, customvar_id),
+    ADD INDEX idx_notification_customvar_customvar_id (customvar_id, notification_id);
+ALTER TABLE timeperiod_customvar
+    ADD INDEX idx_timeperiod_customvar_timeperiod_id (timeperiod_id, customvar_id),
+    ADD INDEX idx_timeperiod_customvar_customvar_id (customvar_id, timeperiod_id);
+ALTER TABLE user_customvar
+    ADD INDEX idx_user_customvar_user_id (user_id, customvar_id),
+    ADD INDEX idx_user_customvar_customvar_id (customvar_id, user_id);
+ALTER TABLE usergroup_customvar
+    ADD INDEX idx_usergroup_customvar_usergroup_id (usergroup_id, customvar_id),
+    ADD INDEX idx_usergroup_customvar_customvar_id (customvar_id, usergroup_id);
+
+ALTER TABLE host
+    MODIFY active_checks_enabled enum('n','y') NOT NULL,
+    MODIFY passive_checks_enabled enum('n','y') NOT NULL,
+    MODIFY event_handler_enabled enum('n','y') NOT NULL,
+    MODIFY notifications_enabled enum('n','y') NOT NULL,
+    MODIFY flapping_enabled enum('n','y') NOT NULL,
+    MODIFY perfdata_enabled enum('n','y') NOT NULL,
+    MODIFY is_volatile enum('n','y') NOT NULL;
+ALTER TABLE host_state
+    ADD COLUMN normalized_performance_data longtext DEFAULT NULL AFTER performance_data,
+    ADD COLUMN last_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id' AFTER acknowledgement_comment_id,
+    ADD COLUMN scheduling_source text DEFAULT NULL AFTER check_source,
+    MODIFY is_problem enum('n','y') NOT NULL,
+    MODIFY is_handled enum('n','y') NOT NULL,
+    MODIFY is_reachable enum('n','y') NOT NULL,
+    MODIFY is_flapping enum('n','y') NOT NULL,
+    MODIFY is_overdue enum('n','y') NOT NULL,
+    MODIFY is_acknowledged enum('n','y','sticky') NOT NULL,
+    MODIFY in_downtime enum('n','y') NOT NULL;
+ALTER TABLE service
+    MODIFY active_checks_enabled enum('n','y') NOT NULL,
+    MODIFY passive_checks_enabled enum('n','y') NOT NULL,
+    MODIFY event_handler_enabled enum('n','y') NOT NULL,
+    MODIFY notifications_enabled enum('n','y') NOT NULL,
+    MODIFY flapping_enabled enum('n','y') NOT NULL,
+    MODIFY perfdata_enabled enum('n','y') NOT NULL,
+    MODIFY is_volatile enum('n','y') NOT NULL;
+ALTER TABLE service_state
+    ADD COLUMN normalized_performance_data longtext DEFAULT NULL AFTER performance_data,
+    ADD COLUMN last_comment_id binary(20) DEFAULT NULL COMMENT 'comment.id' AFTER acknowledgement_comment_id,
+    ADD COLUMN scheduling_source text DEFAULT NULL AFTER check_source,
+    MODIFY is_problem enum('n','y') NOT NULL,
+    MODIFY is_handled enum('n','y') NOT NULL,
+    MODIFY is_reachable enum('n','y') NOT NULL,
+    MODIFY is_flapping enum('n','y') NOT NULL,
+    MODIFY is_overdue enum('n','y') NOT NULL,
+    MODIFY is_acknowledged enum('n','y','sticky') NOT NULL,
+    MODIFY in_downtime enum('n','y') NOT NULL;
+ALTER TABLE icingadb_instance
+    MODIFY responsible enum('n','y') NOT NULL,
+    MODIFY icinga2_notifications_enabled enum('n','y') NOT NULL,
+    MODIFY icinga2_active_service_checks_enabled enum('n','y') NOT NULL,
+    MODIFY icinga2_active_host_checks_enabled enum('n','y') NOT NULL,
+    MODIFY icinga2_event_handlers_enabled enum('n','y') NOT NULL,
+    MODIFY icinga2_flap_detection_enabled enum('n','y') NOT NULL,
+    MODIFY icinga2_performance_data_enabled enum('n','y') NOT NULL;
+ALTER TABLE checkcommand_argument
+    MODIFY repeat_key enum('n','y') NOT NULL,
+    MODIFY required enum('n','y') NOT NULL,
+    MODIFY skip_key enum('n','y') NOT NULL;
+ALTER TABLE eventcommand_argument
+    MODIFY repeat_key enum('n','y') NOT NULL,
+    MODIFY required enum('n','y') NOT NULL,
+    MODIFY skip_key enum('n','y') NOT NULL;
+ALTER TABLE notificationcommand_argument
+    MODIFY repeat_key enum('n','y') NOT NULL,
+    MODIFY required enum('n','y') NOT NULL,
+    MODIFY skip_key enum('n','y') NOT NULL;
+ALTER TABLE comment
+    MODIFY name varchar(548) NOT NULL COMMENT '255+1+255+1+36, i.e. "host.name!service.name!UUID"',
+    MODIFY is_persistent enum('n','y') NOT NULL,
+    MODIFY is_sticky enum('n','y') NOT NULL;
+ALTER TABLE downtime
+    ADD COLUMN scheduled_by varchar(767) DEFAULT NULL COMMENT 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"' AFTER end_time,
+    MODIFY name varchar(548) NOT NULL COMMENT '255+1+255+1+36, i.e. "host.name!service.name!UUID"',
+    MODIFY is_flexible enum('n','y') NOT NULL,
+    MODIFY is_in_effect enum('n','y') NOT NULL;
+ALTER TABLE timeperiod
+    MODIFY prefer_includes enum('n','y') NOT NULL;
+ALTER TABLE user
+    MODIFY notifications_enabled enum('n','y') NOT NULL;
+ALTER TABLE zone
+    MODIFY is_global enum('n','y') NOT NULL;
+ALTER TABLE downtime_history
+    ADD COLUMN scheduled_by varchar(767) DEFAULT NULL COMMENT 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"' AFTER end_time,
+    MODIFY is_flexible enum('n','y') NOT NULL,
+    MODIFY has_been_cancelled enum('n','y') NOT NULL;
+ALTER TABLE comment_history
+    MODIFY is_persistent enum('n','y') NOT NULL,
+    MODIFY is_sticky enum('n','y') NOT NULL,
+    MODIFY has_been_removed enum('n','y') NOT NULL;
+ALTER TABLE acknowledgement_history
+    MODIFY author varchar(255) DEFAULT NULL COLLATE utf8mb4_unicode_ci COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+    MODIFY comment text DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+    MODIFY is_sticky enum('n','y') DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording',
+    MODIFY is_persistent enum('n','y') DEFAULT NULL COMMENT 'NULL if ack_set event happened before Icinga DB history recording';
+
+INSERT INTO icingadb_schema (version, timestamp)
+  VALUES (2, CURRENT_TIMESTAMP() * 1000);
+
+ALTER TABLE host_state
+    MODIFY output longtext DEFAULT NULL,
+    MODIFY long_output longtext DEFAULT NULL,
+    MODIFY performance_data longtext DEFAULT NULL;
+
+ALTER TABLE state_history
+    ADD COLUMN scheduling_source text DEFAULT NULL AFTER check_source,
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.name + host|service.name + event_time)',
+    MODIFY output longtext DEFAULT NULL,
+    MODIFY long_output longtext DEFAULT NULL;
+
+ALTER TABLE service_state
+    MODIFY output longtext DEFAULT NULL,
+    MODIFY long_output longtext DEFAULT NULL,
+    MODIFY performance_data longtext DEFAULT NULL;
+
+ALTER TABLE notification_history
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.name + notification.name + type + send_time)';
+
+ALTER TABLE user_notification_history
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(notification_history_id + user_id)',
+    MODIFY notification_history_id binary(20) NOT NULL COMMENT 'UUID notification_history.id';
+
+ALTER TABLE history
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.name + event_type + x...) given that sha1(environment.name + x...) = *_history_id',
+    MODIFY notification_history_id binary(20) DEFAULT NULL COMMENT 'notification_history.id',
+    MODIFY state_history_id binary(20) DEFAULT NULL COMMENT 'state_history.id',
+    ADD CONSTRAINT fk_history_acknowledgement_history FOREIGN KEY (acknowledgement_history_id) REFERENCES acknowledgement_history (id) ON DELETE CASCADE,
+    ADD CONSTRAINT fk_history_comment_history FOREIGN KEY (comment_history_id) REFERENCES comment_history (comment_id) ON DELETE CASCADE,
+    ADD CONSTRAINT fk_history_downtime_history FOREIGN KEY (downtime_history_id) REFERENCES downtime_history (downtime_id) ON DELETE CASCADE,
+    ADD CONSTRAINT fk_history_flapping_history FOREIGN KEY (flapping_history_id) REFERENCES flapping_history (id) ON DELETE CASCADE,
+    ADD CONSTRAINT fk_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE,
+    ADD CONSTRAINT fk_history_state_history FOREIGN KEY (state_history_id) REFERENCES state_history (id) ON DELETE CASCADE;
+
+ALTER TABLE user_notification_history
+    ADD CONSTRAINT fk_user_notification_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE;
+
+ALTER TABLE host
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE hostgroup
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE hostgroup_member
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + host_id + hostgroup_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE host_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + host_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE hostgroup_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + hostgroup_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE host_state
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE service
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE servicegroup
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE servicegroup_member
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + servicegroup_id + service_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE service_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + service_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE servicegroup_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + servicegroup_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE service_state
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE endpoint
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE environment
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(Icinga CA public key)';
+ALTER TABLE checkcommand
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)';
+ALTER TABLE checkcommand_argument
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + argument_key)';
+ALTER TABLE checkcommand_envvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + envvar_key)';
+ALTER TABLE checkcommand_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE eventcommand
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)';
+ALTER TABLE eventcommand_argument
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + argument_key)';
+ALTER TABLE eventcommand_envvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + envvar_key)';
+ALTER TABLE eventcommand_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE notificationcommand
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + type + name)';
+ALTER TABLE notificationcommand_argument
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + argument_key)';
+ALTER TABLE notificationcommand_envvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + envvar_key)';
+ALTER TABLE notificationcommand_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + command_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE comment
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)';
+ALTER TABLE downtime
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)';
+ALTER TABLE notification
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE notification_user
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + user_id)';
+ALTER TABLE notification_usergroup
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + usergroup_id)';
+ALTER TABLE notification_recipient
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + (user_id | usergroup_id))';
+ALTER TABLE notification_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notification_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE icon_image
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE action_url
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE notes_url
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE timeperiod
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)';
+ALTER TABLE timeperiod_range
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + range_id + timeperiod_id)';
+ALTER TABLE timeperiod_override_include
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + include_id + timeperiod_id)';
+ALTER TABLE timeperiod_override_exclude
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + exclude_id + timeperiod_id)';
+ALTER TABLE timeperiod_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + timeperiod_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name + value)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE customvar_flat
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + flatname + flatvalue)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE user
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE usergroup
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE usergroup_member
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + usergroup_id + user_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE user_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + user_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE usergroup_customvar
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + usergroup_id + customvar_id)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE zone
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + name)',
+    MODIFY environment_id binary(20) NOT NULL COMMENT 'environment.id';
+ALTER TABLE flapping_history
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + "Host"|"Service" + host|service.name + start_time)';
+ALTER TABLE acknowledgement_history
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + "Host"|"Service" + host|service.name + set_time)';
+
+/*
+ * Schema changes after https://github.com/Icinga/icingadb/pull/403:
+ */
+
+ALTER TABLE checkcommand_customvar
+    DROP INDEX idx_checkcommand_customvar_command_id,
+    DROP INDEX idx_checkcommand_customvar_customvar_id;
+
+ALTER TABLE eventcommand_customvar
+    DROP INDEX idx_eventcommand_customvar_command_id,
+    DROP INDEX idx_eventcommand_customvar_customvar_id;
+
+ALTER TABLE notificationcommand_customvar
+    DROP INDEX idx_notificationcommand_customvar_command_id,
+    DROP INDEX idx_notificationcommand_customvar_customvar_id;
+
+ALTER TABLE notification
+    RENAME COLUMN command_id TO notificationcommand_id;
+ALTER TABLE notification
+    MODIFY notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id';
+
+ALTER TABLE checkcommand_argument
+    RENAME COLUMN command_id TO checkcommand_id;
+ALTER TABLE checkcommand_argument
+    MODIFY checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + argument_key)';
+
+ALTER TABLE checkcommand_envvar
+    RENAME COLUMN command_id TO checkcommand_id;
+ALTER TABLE checkcommand_envvar
+    MODIFY checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + envvar_key)';
+
+ALTER TABLE checkcommand_customvar
+    RENAME COLUMN command_id TO checkcommand_id;
+ALTER TABLE checkcommand_customvar
+    MODIFY checkcommand_id binary(20) NOT NULL COMMENT 'checkcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + checkcommand_id + customvar_id)';
+
+ALTER TABLE eventcommand_argument
+    RENAME COLUMN command_id TO eventcommand_id;
+ALTER TABLE eventcommand_argument
+    MODIFY eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + argument_key)';
+
+ALTER TABLE eventcommand_envvar
+    RENAME COLUMN command_id TO eventcommand_id;
+ALTER TABLE eventcommand_envvar
+    MODIFY eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + envvar_key)';
+
+ALTER TABLE eventcommand_customvar
+    RENAME COLUMN command_id TO eventcommand_id;
+ALTER TABLE eventcommand_customvar
+    MODIFY eventcommand_id binary(20) NOT NULL COMMENT 'eventcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + eventcommand_id + customvar_id)';
+
+ALTER TABLE notificationcommand_argument
+    RENAME COLUMN command_id TO notificationcommand_id;
+ALTER TABLE notificationcommand_argument
+    MODIFY notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + argument_key)';
+
+ALTER TABLE notificationcommand_envvar
+    RENAME COLUMN command_id TO notificationcommand_id;
+ALTER TABLE notificationcommand_envvar
+    MODIFY notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + envvar_key)';
+
+ALTER TABLE notificationcommand_customvar
+    RENAME COLUMN command_id TO notificationcommand_id;
+ALTER TABLE notificationcommand_customvar
+    MODIFY notificationcommand_id binary(20) NOT NULL COMMENT 'notificationcommand.id',
+    MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notificationcommand_id + customvar_id)';
+
+ALTER TABLE checkcommand_customvar
+    ADD INDEX idx_checkcommand_customvar_checkcommand_id (checkcommand_id, customvar_id),
+    ADD INDEX idx_checkcommand_customvar_customvar_id (customvar_id, checkcommand_id);
+
+ALTER TABLE eventcommand_customvar
+    ADD INDEX idx_eventcommand_customvar_eventcommand_id (eventcommand_id, customvar_id),
+    ADD INDEX idx_eventcommand_customvar_customvar_id (customvar_id, eventcommand_id);
+
+ALTER TABLE notificationcommand_customvar
+    ADD INDEX idx_notificationcommand_customvar_notificationcommand_id (notificationcommand_id, customvar_id),
+    ADD INDEX idx_notificationcommand_customvar_customvar_id (customvar_id, notificationcommand_id);
+
+ALTER TABLE downtime
+    ADD COLUMN scheduled_duration bigint unsigned NOT NULL AFTER scheduled_end_time,
+    ADD COLUMN duration bigint unsigned NOT NULL COMMENT 'Duration of the downtime: When the downtime is flexible, this is the same as flexible_duration otherwise scheduled_duration' AFTER end_time,
+    MODIFY COLUMN flexible_duration bigint unsigned NOT NULL AFTER is_flexible;
+UPDATE downtime SET scheduled_duration = scheduled_end_time - scheduled_start_time, duration = (CASE WHEN is_flexible = 'y' THEN flexible_duration ELSE scheduled_end_time - scheduled_start_time END) WHERE scheduled_duration = 0;
+
+ALTER TABLE service_state ADD COLUMN host_id binary(20) NOT NULL COMMENT 'host.id' AFTER id;
+UPDATE service_state INNER JOIN service ON service.id = service_state.service_id SET service_state.host_id = service.host_id WHERE service_state.host_id = REPEAT('\0', 20);
+
+ALTER TABLE comment
+    ADD INDEX idx_comment_author (author) COMMENT 'Comment list filtered/ordered by author',
+    ADD INDEX idx_comment_expire_time (expire_time) COMMENT 'Comment list filtered/ordered by expire_time';
+
+ALTER TABLE downtime
+    ADD INDEX idx_downtime_entry_time (entry_time) COMMENT 'Downtime list filtered/ordered by entry_time',
+    ADD INDEX idx_downtime_start_time (start_time) COMMENT 'Downtime list filtered/ordered by start_time',
+    ADD INDEX idx_downtime_end_time (end_time) COMMENT 'Downtime list filtered/ordered by end_time',
+    ADD INDEX idx_downtime_scheduled_start_time (scheduled_start_time) COMMENT 'Downtime list filtered/ordered by scheduled_start_time',
+    ADD INDEX idx_downtime_scheduled_end_time (scheduled_end_time) COMMENT 'Downtime list filtered/ordered by scheduled_end_time',
+    ADD INDEX idx_downtime_author (author) COMMENT 'Downtime list filtered/ordered by author',
+    ADD INDEX idx_downtime_duration (duration) COMMENT 'Downtime list filtered/ordered by duration';
+
+ALTER TABLE service_state
+    ADD INDEX idx_service_state_is_problem (is_problem, severity) COMMENT 'Service list filtered by is_problem ordered by severity',
+    ADD INDEX idx_service_state_severity (severity) COMMENT 'Service list filtered/ordered by severity',
+    ADD INDEX idx_service_state_soft_state (soft_state, last_state_change) COMMENT 'Service list filtered/ordered by soft_state; recently recovered filter',
+    ADD INDEX idx_service_state_last_state_change (last_state_change) COMMENT 'Service list filtered/ordered by last_state_change';
+
+ALTER TABLE host_state
+    ADD INDEX idx_host_state_is_problem (is_problem, severity) COMMENT 'Host list filtered by is_problem ordered by severity',
+    ADD INDEX idx_host_state_severity (severity) COMMENT 'Host list filtered/ordered by severity',
+    ADD INDEX idx_host_state_soft_state (soft_state, last_state_change) COMMENT 'Host list filtered/ordered by soft_state; recently recovered filter',
+    ADD INDEX idx_host_state_last_state_change (last_state_change) COMMENT 'Host list filtered/ordered by last_state_change';
+
+ALTER TABLE hostgroup
+    ADD INDEX idx_hostroup_name (name) COMMENT 'Host/service/host group list filtered by host group name';
+
+ALTER TABLE servicegroup
+    ADD INDEX idx_servicegroup_name (name) COMMENT 'Host/service/service group list filtered by service group name';
+
+ALTER TABLE notification
+    DROP INDEX idx_host_id,
+    DROP INDEX idx_service_id,
+    ADD INDEX idx_notification_host_id (host_id),
+    ADD INDEX idx_notification_service_id (service_id);
+
+ALTER TABLE zone
+    DROP INDEX idx_parent_id,
+    ADD INDEX idx_zone_parent_id (parent_id);
+
+ALTER TABLE history
+    ADD INDEX idx_history_host_service_id (host_id, service_id, event_time) COMMENT 'Host/service history detail filter';
+
+ALTER TABLE notification_history
+    DROP INDEX idx_notification_history_event_time,
+    ADD INDEX idx_notification_history_send_time (send_time) COMMENT 'Notification list filtered/ordered by send_time';
diff --git a/schema/mysql/upgrades/1.0.0.sql b/schema/mysql/upgrades/1.0.0.sql
new file mode 100644
index 0000000..16bb45e
--- /dev/null
+++ b/schema/mysql/upgrades/1.0.0.sql
@@ -0,0 +1,291 @@
+DROP FUNCTION IF EXISTS get_sla_ok_percent;
+DELIMITER //
+CREATE FUNCTION get_sla_ok_percent(
+  in_host_id binary(20),
+  in_service_id binary(20),
+  in_start_time bigint unsigned,
+  in_end_time bigint unsigned
+)
+RETURNS decimal(7, 4)
+READS SQL DATA
+BEGIN
+  DECLARE result decimal(7, 4);
+  DECLARE row_event_time bigint unsigned;
+  DECLARE row_event_type enum('state_change', 'downtime_start', 'downtime_end', 'end');
+  DECLARE row_event_prio int;
+  DECLARE row_hard_state tinyint unsigned;
+  DECLARE row_previous_hard_state tinyint unsigned;
+  DECLARE last_event_time bigint unsigned;
+  DECLARE last_hard_state tinyint unsigned;
+  DECLARE active_downtimes int unsigned;
+  DECLARE problem_time bigint unsigned;
+  DECLARE total_time bigint unsigned;
+  DECLARE done int;
+  DECLARE cur CURSOR FOR
+    (
+      -- all downtime_start events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        GREATEST(downtime_start, in_start_time) AS event_time,
+        'downtime_start' AS event_type,
+        1 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+    ) UNION ALL (
+      -- all downtime_end events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        downtime_end AS event_time,
+        'downtime_end' AS event_type,
+        2 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+        AND d.downtime_end < in_end_time
+    ) UNION ALL (
+      -- all state events strictly in interval
+      SELECT
+        event_time,
+        'state_change' AS event_type,
+        0 AS event_prio,
+        hard_state,
+        previous_hard_state
+      FROM sla_history_state s
+      WHERE s.host_id = in_host_id
+        AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+        AND s.event_time > in_start_time
+        AND s.event_time < in_end_time
+    ) UNION ALL (
+      -- end event to keep loop simple, values are not used
+      SELECT
+        in_end_time AS event_time,
+        'end' AS event_type,
+        3 AS event_prio,
+        NULL AS hard_state,
+        NULL AS previous_hard_state
+    )
+    ORDER BY event_time, event_prio;
+  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
+
+  IF in_end_time <= in_start_time THEN
+    SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'end time must be greater than start time';
+  END IF;
+
+  -- Use the latest event at or before the beginning of the SLA interval as the initial state.
+  SELECT hard_state INTO last_hard_state
+  FROM sla_history_state s
+  WHERE s.host_id = in_host_id
+    AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+    AND s.event_time <= in_start_time
+  ORDER BY s.event_time DESC
+  LIMIT 1;
+
+  -- If this does not exist, use the previous state from the first event after the beginning of the SLA interval.
+  IF last_hard_state IS NULL THEN
+    SELECT previous_hard_state INTO last_hard_state
+    FROM sla_history_state s
+    WHERE s.host_id = in_host_id
+      AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+      AND s.event_time > in_start_time
+    ORDER BY s.event_time ASC
+    LIMIT 1;
+  END IF;
+
+  -- If this also does not exist, use the current host/service state.
+  IF last_hard_state IS NULL THEN
+    IF in_service_id IS NULL THEN
+      SELECT hard_state INTO last_hard_state
+      FROM host_state s
+      WHERE s.host_id = in_host_id;
+    ELSE
+      SELECT hard_state INTO last_hard_state
+      FROM service_state s
+      WHERE s.host_id = in_host_id
+        AND s.service_id = in_service_id;
+    END IF;
+  END IF;
+
+  IF last_hard_state IS NULL THEN
+    SET last_hard_state = 0;
+  END IF;
+
+  SET problem_time = 0;
+  SET total_time = in_end_time - in_start_time;
+  SET last_event_time = in_start_time;
+  SET active_downtimes = 0;
+
+  SET done = 0;
+  OPEN cur;
+  read_loop: LOOP
+    FETCH cur INTO row_event_time, row_event_type, row_event_prio, row_hard_state, row_previous_hard_state;
+    IF done THEN
+      LEAVE read_loop;
+    END IF;
+
+    IF row_previous_hard_state = 99 THEN
+      SET total_time = total_time - (row_event_time - last_event_time);
+    ELSEIF ((in_service_id IS NULL AND last_hard_state > 0) OR (in_service_id IS NOT NULL AND last_hard_state > 1))
+      AND last_hard_state != 99
+      AND active_downtimes = 0
+    THEN
+      SET problem_time = problem_time + row_event_time - last_event_time;
+    END IF;
+
+    SET last_event_time = row_event_time;
+    IF row_event_type = 'state_change' THEN
+      SET last_hard_state = row_hard_state;
+    ELSEIF row_event_type = 'downtime_start' THEN
+      SET active_downtimes = active_downtimes + 1;
+    ELSEIF row_event_type = 'downtime_end' THEN
+      SET active_downtimes = active_downtimes - 1;
+    END IF;
+  END LOOP;
+  CLOSE cur;
+
+  SET result = 100 * (total_time - problem_time) / total_time;
+  RETURN result;
+END//
+DELIMITER ;
+
+ALTER TABLE hostgroup
+    DROP INDEX idx_hostroup_name,
+    ADD INDEX idx_hostgroup_name (name) COMMENT 'Host/service/host group list filtered by host group name';
+
+ALTER TABLE notification_history
+  MODIFY `text` longtext NOT NULL;
+
+ALTER TABLE host_state
+  ADD COLUMN previous_soft_state tinyint unsigned NOT NULL AFTER hard_state,
+  CHANGE attempt check_attempt tinyint unsigned NOT NULL,
+  CHANGE timeout check_timeout int unsigned DEFAULT NULL;
+
+ALTER TABLE service_state
+  ADD COLUMN previous_soft_state tinyint unsigned NOT NULL AFTER hard_state,
+  CHANGE attempt check_attempt tinyint unsigned NOT NULL,
+  CHANGE timeout check_timeout int unsigned DEFAULT NULL;
+
+ALTER TABLE checkcommand_argument
+  ADD COLUMN `separator` varchar(255) DEFAULT NULL AFTER set_if;
+
+ALTER TABLE eventcommand_argument
+  ADD COLUMN `separator` varchar(255) DEFAULT NULL AFTER set_if;
+
+ALTER TABLE notificationcommand_argument
+  ADD COLUMN `separator` varchar(255) DEFAULT NULL AFTER set_if;
+
+ALTER TABLE notification_history
+  ADD INDEX idx_notification_history_env_send_time (environment_id, send_time) COMMENT 'Filter for history retention';
+
+ALTER TABLE acknowledgement_history
+  ADD INDEX idx_acknowledgement_history_env_clear_time (environment_id, clear_time) COMMENT 'Filter for history retention';
+
+ALTER TABLE comment_history
+  ADD INDEX idx_comment_history_env_remove_time (environment_id, remove_time) COMMENT 'Filter for history retention';
+
+ALTER TABLE downtime_history
+  ADD INDEX idx_downtime_history_env_end_time (environment_id, end_time) COMMENT 'Filter for history retention';
+
+ALTER TABLE flapping_history
+  ADD INDEX idx_flapping_history_env_end_time (environment_id, end_time) COMMENT 'Filter for history retention';
+
+ALTER TABLE state_history
+  ADD INDEX idx_state_history_env_event_time (environment_id, event_time) COMMENT 'Filter for history retention',
+  CHANGE attempt check_attempt tinyint unsigned NOT NULL;
+
+ALTER TABLE icon_image
+  DROP PRIMARY KEY,
+  MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + icon_image)',
+  ADD PRIMARY KEY (id);
+
+ALTER TABLE action_url
+  DROP PRIMARY KEY,
+  MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + action_url)',
+  ADD PRIMARY KEY (id);
+
+ALTER TABLE notes_url
+  DROP PRIMARY KEY,
+  MODIFY id binary(20) NOT NULL COMMENT 'sha1(environment.id + notes_url)',
+  ADD PRIMARY KEY (id);
+
+ALTER TABLE customvar
+  MODIFY name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL;
+
+ALTER TABLE customvar_flat
+  MODIFY flatname varchar(512) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'Path converted with `.` and `[ ]`';
+
+ALTER TABLE host
+  CHANGE checkcommand checkcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'checkcommand.name',
+  CHANGE check_timeperiod
+    check_timeperiod_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'timeperiod.name',
+  CHANGE eventcommand eventcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'eventcommand.name',
+  CHANGE zone zone_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'zone.name',
+  CHANGE command_endpoint command_endpoint_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'endpoint.name';
+
+ALTER TABLE service
+  CHANGE checkcommand checkcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'checkcommand.name',
+  CHANGE check_timeperiod
+    check_timeperiod_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'timeperiod.name',
+  CHANGE eventcommand eventcommand_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'eventcommand.name',
+  CHANGE zone zone_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'zone.name',
+  CHANGE command_endpoint command_endpoint_name varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'endpoint.name';
+
+CREATE TABLE sla_history_state (
+  id binary(20) NOT NULL COMMENT 'state_history.id (may reference already deleted rows)',
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  event_time bigint unsigned NOT NULL COMMENT 'unix timestamp the event occurred',
+  hard_state TINYINT UNSIGNED NOT NULL COMMENT 'hard state after this event',
+  previous_hard_state TINYINT UNSIGNED NOT NULL COMMENT 'hard state before this event',
+
+  PRIMARY KEY (id),
+
+  INDEX idx_sla_history_state_event (host_id, service_id, event_time) COMMENT 'Filter for calculating the sla reports',
+  INDEX idx_sla_history_state_env_event_time (environment_id, event_time) COMMENT 'Filter for sla history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+INSERT INTO sla_history_state
+  (id, environment_id, endpoint_id, object_type, host_id, service_id, event_time, hard_state, previous_hard_state)
+  SELECT id, environment_id, endpoint_id, object_type, host_id, service_id, event_time, hard_state, previous_hard_state
+  FROM state_history
+  WHERE state_type = 'hard'
+  ON DUPLICATE KEY UPDATE sla_history_state.id = sla_history_state.id;
+
+CREATE TABLE sla_history_downtime (
+  environment_id binary(20) NOT NULL COMMENT 'environment.id',
+  endpoint_id binary(20) DEFAULT NULL COMMENT 'endpoint.id',
+  object_type enum('host', 'service') NOT NULL,
+  host_id binary(20) NOT NULL COMMENT 'host.id',
+  service_id binary(20) DEFAULT NULL COMMENT 'service.id',
+
+  downtime_id binary(20) NOT NULL COMMENT 'downtime.id (may reference already deleted rows)',
+  downtime_start BIGINT UNSIGNED NOT NULL COMMENT 'start time of the downtime',
+  downtime_end BIGINT UNSIGNED NOT NULL COMMENT 'end time of the downtime',
+
+  PRIMARY KEY (downtime_id),
+
+  INDEX idx_sla_history_downtime_event (host_id, service_id, downtime_start, downtime_end) COMMENT 'Filter for calculating the sla reports',
+  INDEX idx_sla_history_downtime_env_downtime_end (environment_id, downtime_end) COMMENT 'Filter for sla history retention'
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=DYNAMIC;
+
+INSERT INTO sla_history_downtime
+  (environment_id, endpoint_id, object_type, host_id, service_id, downtime_id, downtime_start, downtime_end)
+  SELECT environment_id, endpoint_id, object_type, host_id, service_id, downtime_id,
+    start_time AS downtime_start, IF(has_been_cancelled = 'y', cancel_time, end_time) AS downtime_end
+  FROM downtime_history
+  ON DUPLICATE KEY UPDATE sla_history_downtime.downtime_id = sla_history_downtime.downtime_id;
+
+INSERT INTO icingadb_schema (version, TIMESTAMP)
+  VALUES (3, CURRENT_TIMESTAMP() * 1000);
diff --git a/schema/mysql/upgrades/1.1.1.sql b/schema/mysql/upgrades/1.1.1.sql
new file mode 100644
index 0000000..264ecae
--- /dev/null
+++ b/schema/mysql/upgrades/1.1.1.sql
@@ -0,0 +1,37 @@
+ALTER TABLE notification
+    MODIFY COLUMN name varchar(767) NOT NULL COMMENT '255+1+255+1+255, i.e. "host.name!service.name!notification.name"',
+    MODIFY COLUMN name_ci varchar(767) COLLATE utf8mb4_unicode_ci NOT NULL;
+
+ALTER TABLE customvar_flat MODIFY COLUMN flatvalue text DEFAULT NULL;
+
+ALTER TABLE customvar_flat
+    ADD INDEX idx_customvar_flat_flatname_flatvalue (flatname, flatvalue(255)) COMMENT 'Lists filtered by custom variable';
+
+ALTER TABLE hostgroup
+    ADD INDEX idx_hostgroup_display_name (display_name) COMMENT 'Hostgroup list filtered/ordered by display_name',
+    ADD INDEX idx_hostgroup_name_ci (name_ci) COMMENT 'Hostgroup list filtered using quick search',
+    DROP INDEX idx_hostgroup_name,
+    ADD INDEX idx_hostgroup_name (name) COMMENT 'Host/service/host group list filtered by host group name; Hostgroup detail filter';
+
+ALTER TABLE servicegroup
+    ADD INDEX idx_servicegroup_display_name (display_name) COMMENT 'Servicegroup list filtered/ordered by display_name',
+    ADD INDEX idx_servicegroup_name_ci (name_ci) COMMENT 'Servicegroup list filtered using quick search',
+    DROP INDEX idx_servicegroup_name,
+    ADD INDEX idx_servicegroup_name (name) COMMENT 'Host/service/service group list filtered by service group name; Servicegroup detail filter';
+
+-- The following sequence of statements changes the type of history.event_type like the following statement would:
+--
+--   ALTER TABLE history MODIFY event_type enum('state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification') NOT NULL;
+--
+-- It's just much faster to add a second column, copy the column using an UPDATE statement and then replace the
+-- old column with the one just generated. Table locking ensures that no other connection inserts data in the meantime.
+LOCK TABLES history WRITE;
+ALTER TABLE history ADD COLUMN event_type_new enum('state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification') NOT NULL AFTER event_type;
+UPDATE history SET event_type_new = event_type;
+ALTER TABLE history
+    DROP COLUMN event_type,
+    CHANGE COLUMN event_type_new event_type enum('state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification') NOT NULL;
+UNLOCK TABLES;
+
+INSERT INTO icingadb_schema (version, timestamp)
+  VALUES (4, CURRENT_TIMESTAMP() * 1000);
diff --git a/schema/pgsql/schema.sql b/schema/pgsql/schema.sql
new file mode 100644
index 0000000..9027fac
--- /dev/null
+++ b/schema/pgsql/schema.sql
@@ -0,0 +1,2184 @@
+-- Icinga DB | (c) 2021 Icinga GmbH | GPLv2+
+
+-- Postgres in Docker: ensure CITEXT columns are available during schema import. DB user is a superuser and can do this unconditionally.
+-- Everything else: assert CITEXT columns are available during schema import. DB user isn't the superuser and can do this only if it's a no-op (`NOTICE:  extension "citext" already exists, skipping`), i.e. if CITEXT columns are already available.
+CREATE EXTENSION IF NOT EXISTS citext;
+
+CREATE DOMAIN bytea20 AS bytea CONSTRAINT exactly_20_bytes_long CHECK ( VALUE IS NULL OR octet_length(VALUE) = 20 );
+CREATE DOMAIN bytea16 AS bytea CONSTRAINT exactly_16_bytes_long CHECK ( VALUE IS NULL OR octet_length(VALUE) = 16 );
+CREATE DOMAIN bytea4 AS bytea CONSTRAINT exactly_4_bytes_long CHECK ( VALUE IS NULL OR octet_length(VALUE) = 4 );
+
+CREATE DOMAIN biguint AS bigint CONSTRAINT positive CHECK ( VALUE IS NULL OR 0 <= VALUE );
+CREATE DOMAIN uint AS bigint CONSTRAINT between_0_and_4294967295 CHECK ( VALUE IS NULL OR VALUE BETWEEN 0 AND 4294967295 );
+CREATE DOMAIN smalluint AS int CONSTRAINT between_0_and_65535 CHECK ( VALUE IS NULL OR VALUE BETWEEN 0 AND 65535 );
+CREATE DOMAIN tinyuint AS smallint CONSTRAINT between_0_and_255 CHECK ( VALUE IS NULL OR VALUE BETWEEN 0 AND 255 );
+
+CREATE TYPE boolenum AS ENUM ( 'n', 'y' );
+CREATE TYPE acked AS ENUM ( 'n', 'y', 'sticky' );
+CREATE TYPE state_type AS ENUM ( 'hard', 'soft' );
+CREATE TYPE checkable_type AS ENUM ( 'host', 'service' );
+CREATE TYPE comment_type AS ENUM ( 'comment', 'ack' );
+CREATE TYPE notification_type AS ENUM ( 'downtime_start', 'downtime_end', 'downtime_removed', 'custom', 'acknowledgement', 'problem', 'recovery', 'flapping_start', 'flapping_end' );
+
+-- The enum values are ordered in a way that event_type provides a meaningful sort order for history entries with
+-- the same event_time. state_change comes first as it can cause many of the other events like trigger downtimes,
+-- remove acknowledgements and send notifications. Similarly, notification comes last as any other event can result
+-- in a notification. End events sort before the corresponding start events as any ack/comment/downtime/flapping
+-- period should last for more than a millisecond, therefore, the old period ends first and then the new one starts.
+-- The remaining types are sorted by impact and cause: comments are informative, flapping is automatic and changes
+-- mechanics, downtimes are semi-automatic, require user action (or configuration) and change mechanics, acks are pure
+-- user actions and change mechanics.
+CREATE TYPE history_type AS ENUM ( 'state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification' );
+
+CREATE OR REPLACE FUNCTION get_sla_ok_percent(
+  in_host_id bytea20,
+  in_service_id bytea20,
+  in_start_time biguint,
+  in_end_time biguint
+)
+RETURNS decimal(7, 4)
+LANGUAGE plpgsql
+STABLE
+PARALLEL RESTRICTED
+AS $$
+DECLARE
+  last_event_time biguint := in_start_time;
+  last_hard_state tinyuint;
+  active_downtimes uint := 0;
+  problem_time biguint := 0;
+  total_time biguint;
+  row record;
+BEGIN
+  IF in_end_time <= in_start_time THEN
+    RAISE 'end time must be greater than start time';
+  END IF;
+
+  total_time := in_end_time - in_start_time;
+
+  -- Use the latest event at or before the beginning of the SLA interval as the initial state.
+  SELECT hard_state INTO last_hard_state
+  FROM sla_history_state s
+  WHERE s.host_id = in_host_id
+    AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+    AND s.event_time <= in_start_time
+  ORDER BY s.event_time DESC
+  LIMIT 1;
+
+  -- If this does not exist, use the previous state from the first event after the beginning of the SLA interval.
+  IF last_hard_state IS NULL THEN
+    SELECT previous_hard_state INTO last_hard_state
+    FROM sla_history_state s
+    WHERE s.host_id = in_host_id
+      AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+      AND s.event_time > in_start_time
+    ORDER BY s.event_time ASC
+    LIMIT 1;
+  END IF;
+
+  -- If this also does not exist, use the current host/service state.
+  IF last_hard_state IS NULL THEN
+    IF in_service_id IS NULL THEN
+      SELECT hard_state INTO last_hard_state
+      FROM host_state s
+      WHERE s.host_id = in_host_id;
+    ELSE
+      SELECT hard_state INTO last_hard_state
+      FROM service_state s
+      WHERE s.host_id = in_host_id
+        AND s.service_id = in_service_id;
+    END IF;
+  END IF;
+
+  IF last_hard_state IS NULL THEN
+    last_hard_state := 0;
+  END IF;
+
+  FOR row IN
+    (
+      -- all downtime_start events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        GREATEST(downtime_start, in_start_time) AS event_time,
+        'downtime_start' AS event_type,
+        1 AS event_prio,
+        NULL::tinyuint AS hard_state,
+        NULL::tinyuint AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+    ) UNION ALL (
+      -- all downtime_end events before the end of the SLA interval
+      -- for downtimes that overlap the SLA interval in any way
+      SELECT
+        downtime_end AS event_time,
+        'downtime_end' AS event_type,
+        2 AS event_prio,
+        NULL::tinyuint AS hard_state,
+        NULL::tinyuint AS previous_hard_state
+      FROM sla_history_downtime d
+      WHERE d.host_id = in_host_id
+        AND ((in_service_id IS NULL AND d.service_id IS NULL) OR d.service_id = in_service_id)
+        AND d.downtime_start < in_end_time
+        AND d.downtime_end >= in_start_time
+        AND d.downtime_end < in_end_time
+    ) UNION ALL (
+      -- all state events strictly in interval
+      SELECT
+        event_time,
+        'state_change' AS event_type,
+        0 AS event_prio,
+        hard_state,
+        previous_hard_state
+      FROM sla_history_state s
+      WHERE s.host_id = in_host_id
+        AND ((in_service_id IS NULL AND s.service_id IS NULL) OR s.service_id = in_service_id)
+        AND s.event_time > in_start_time
+        AND s.event_time < in_end_time
+    ) UNION ALL (
+      -- end event to keep loop simple, values are not used
+      SELECT
+        in_end_time AS event_time,
+        'end' AS event_type,
+        3 AS event_prio,
+        NULL::tinyuint AS hard_state,
+        NULL::tinyuint AS previous_hard_state
+    )
+    ORDER BY event_time, event_prio
+  LOOP
+    IF row.previous_hard_state = 99 THEN
+      total_time := total_time - (row.event_time - last_event_time);
+    ELSEIF ((in_service_id IS NULL AND last_hard_state > 0) OR (in_service_id IS NOT NULL AND last_hard_state > 1))
+      AND last_hard_state != 99
+      AND active_downtimes = 0
+    THEN
+      problem_time := problem_time + row.event_time - last_event_time;
+    END IF;
+
+    last_event_time := row.event_time;
+    IF row.event_type = 'state_change' THEN
+      last_hard_state := row.hard_state;
+    ELSEIF row.event_type = 'downtime_start' THEN
+      active_downtimes := active_downtimes + 1;
+    ELSEIF row.event_type = 'downtime_end' THEN
+      active_downtimes := active_downtimes - 1;
+    END IF;
+  END LOOP;
+
+  RETURN 100 * (total_time - problem_time) / total_time;
+END;
+$$;
+
+/* At the moment Icinga DB Web doesn't know the column types,
+   so it sends SQL queries with LIKE operators for all suggestions in the search bar,
+   which fails for numeric and enum types on PostgreSQL.
+   To support this, the LIKE operator (internally translated to ~~) is overloaded.
+   Note that this is only a temporary solution until Icinga DB Web provides column type support.
+ */
+CREATE OR REPLACE FUNCTION anynonarrayliketext(anynonarray, text)
+  RETURNS bool
+  LANGUAGE plpgsql
+  IMMUTABLE
+  PARALLEL SAFE
+  AS $$
+    BEGIN
+      RETURN $1::TEXT LIKE $2;
+    END;
+  $$;
+CREATE OPERATOR ~~ (LEFTARG=anynonarray, RIGHTARG=text, PROCEDURE=anynonarrayliketext);
+
+CREATE TABLE host (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  address varchar(255) NOT NULL,
+  address6 varchar(255) NOT NULL,
+  address_bin bytea4 DEFAULT NULL,
+  address6_bin bytea16 DEFAULT NULL,
+
+  checkcommand_name citext NOT NULL,
+  checkcommand_id bytea20 NOT NULL,
+
+  max_check_attempts uint NOT NULL,
+
+  check_timeperiod_name citext NOT NULL,
+  check_timeperiod_id bytea20 DEFAULT NULL,
+
+  check_timeout uint DEFAULT NULL,
+  check_interval uint NOT NULL,
+  check_retry_interval uint NOT NULL,
+
+  active_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  passive_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  event_handler_enabled boolenum NOT NULL DEFAULT 'n',
+  notifications_enabled boolenum NOT NULL DEFAULT 'n',
+
+  flapping_enabled boolenum NOT NULL DEFAULT 'n',
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  perfdata_enabled boolenum NOT NULL DEFAULT 'n',
+
+  eventcommand_name citext NOT NULL,
+  eventcommand_id bytea20 DEFAULT NULL,
+
+  is_volatile boolenum NOT NULL DEFAULT 'n',
+
+  action_url_id bytea20 DEFAULT NULL,
+  notes_url_id bytea20 DEFAULT NULL,
+  notes text NOT NULL,
+  icon_image_id bytea20 DEFAULT NULL,
+  icon_image_alt varchar(32) NOT NULL,
+
+  zone_name citext NOT NULL,
+  zone_id bytea20 DEFAULT NULL,
+
+  command_endpoint_name citext NOT NULL,
+  command_endpoint_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_host PRIMARY KEY (id)
+);
+
+ALTER TABLE host ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN address_bin SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN address6_bin SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN checkcommand_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN check_timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN eventcommand_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN action_url_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN notes_url_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN icon_image_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN zone_id SET STORAGE PLAIN;
+ALTER TABLE host ALTER COLUMN command_endpoint_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_action_url_checksum ON host(action_url_id);
+CREATE INDEX idx_notes_url_checksum ON host(notes_url_id);
+CREATE INDEX idx_icon_image_checksum ON host(icon_image_id);
+CREATE INDEX idx_host_display_name ON host(display_name);
+CREATE INDEX idx_host_name_ci ON host(name_ci);
+CREATE INDEX idx_host_name ON host(name);
+
+COMMENT ON COLUMN host.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN host.environment_id IS 'environment.id';
+COMMENT ON COLUMN host.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN host.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN host.checkcommand_name IS 'checkcommand.name';
+COMMENT ON COLUMN host.checkcommand_id IS 'checkcommand.id';
+COMMENT ON COLUMN host.check_timeperiod_name IS 'timeperiod.name';
+COMMENT ON COLUMN host.check_timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN host.eventcommand_name IS 'eventcommand.name';
+COMMENT ON COLUMN host.eventcommand_id IS 'eventcommand.id';
+COMMENT ON COLUMN host.action_url_id IS 'action_url.id';
+COMMENT ON COLUMN host.notes_url_id IS 'notes_url.id';
+COMMENT ON COLUMN host.icon_image_id IS 'icon_image.id';
+COMMENT ON COLUMN host.zone_name IS 'zone.name';
+COMMENT ON COLUMN host.zone_id IS 'zone.id';
+COMMENT ON COLUMN host.command_endpoint_name IS 'endpoint.name';
+COMMENT ON COLUMN host.command_endpoint_id IS 'endpoint.id';
+
+COMMENT ON INDEX idx_action_url_checksum IS 'cleanup';
+COMMENT ON INDEX idx_notes_url_checksum IS 'cleanup';
+COMMENT ON INDEX idx_icon_image_checksum IS 'cleanup';
+COMMENT ON INDEX idx_host_display_name IS 'Host list filtered/ordered by display_name';
+COMMENT ON INDEX idx_host_name_ci IS 'Host list filtered using quick search';
+COMMENT ON INDEX idx_host_name IS 'Host list filtered/ordered by name; Host detail filter';
+
+CREATE TABLE hostgroup (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_hostgroup PRIMARY KEY (id)
+);
+
+ALTER TABLE hostgroup ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE hostgroup ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE hostgroup ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE hostgroup ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE hostgroup ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_hostgroup_display_name ON hostgroup(display_name);
+CREATE INDEX idx_hostgroup_name_ci ON hostgroup(name_ci);
+CREATE INDEX idx_hostgroup_name ON hostgroup(name);
+
+COMMENT ON COLUMN hostgroup.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN hostgroup.environment_id IS 'environment.id';
+COMMENT ON COLUMN hostgroup.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN hostgroup.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN hostgroup.zone_id IS 'zone.id';
+
+COMMENT ON INDEX idx_hostgroup_display_name IS 'Hostgroup list filtered/ordered by display_name';
+COMMENT ON INDEX idx_hostgroup_name_ci IS 'Hostgroup list filtered using quick search';
+COMMENT ON INDEX idx_hostgroup_name IS 'Host/service/host group list filtered by host group name; Hostgroup detail filter';
+
+CREATE TABLE hostgroup_member (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+  hostgroup_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_hostgroup_member PRIMARY KEY (id)
+);
+
+ALTER TABLE hostgroup_member ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_member ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_member ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_member ALTER COLUMN hostgroup_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_hostgroup_member_host_id ON hostgroup_member(host_id, hostgroup_id);
+CREATE INDEX idx_hostgroup_member_hostgroup_id ON hostgroup_member(hostgroup_id, host_id);
+
+COMMENT ON COLUMN hostgroup_member.id IS 'sha1(environment.id + host_id + hostgroup_id)';
+COMMENT ON COLUMN hostgroup_member.environment_id IS 'environment.id';
+COMMENT ON COLUMN hostgroup_member.host_id IS 'host.id';
+COMMENT ON COLUMN hostgroup_member.hostgroup_id IS 'hostgroup.id';
+
+CREATE TABLE host_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_host_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE host_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE host_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE host_customvar ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE host_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_host_customvar_host_id ON host_customvar(host_id, customvar_id);
+CREATE INDEX idx_host_customvar_customvar_id ON host_customvar(customvar_id, host_id);
+
+COMMENT ON COLUMN host_customvar.id IS 'sha1(environment.id + host_id + customvar_id)';
+COMMENT ON COLUMN host_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN host_customvar.host_id IS 'host.id';
+COMMENT ON COLUMN host_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE hostgroup_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  hostgroup_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_hostgroup_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE hostgroup_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_customvar ALTER COLUMN hostgroup_id SET STORAGE PLAIN;
+ALTER TABLE hostgroup_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_hostgroup_customvar_hostgroup_id ON hostgroup_customvar(hostgroup_id, customvar_id);
+CREATE INDEX idx_hostgroup_customvar_customvar_id ON hostgroup_customvar(customvar_id, hostgroup_id);
+
+COMMENT ON COLUMN hostgroup_customvar.id IS 'sha1(environment.id + hostgroup_id + customvar_id)';
+COMMENT ON COLUMN hostgroup_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN hostgroup_customvar.hostgroup_id IS 'hostgroup.id';
+COMMENT ON COLUMN hostgroup_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE host_state (
+  id bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  state_type state_type NOT NULL DEFAULT 'hard',
+  soft_state tinyuint NOT NULL,
+  hard_state tinyuint NOT NULL,
+  previous_soft_state tinyuint NOT NULL,
+  previous_hard_state tinyuint NOT NULL,
+  check_attempt tinyuint NOT NULL,
+  severity smalluint NOT NULL,
+
+  output text DEFAULT NULL,
+  long_output text DEFAULT NULL,
+  performance_data text DEFAULT NULL,
+  normalized_performance_data text DEFAULT NULL,
+
+  check_commandline text DEFAULT NULL,
+
+  is_problem boolenum NOT NULL DEFAULT 'n',
+  is_handled boolenum NOT NULL DEFAULT 'n',
+  is_reachable boolenum NOT NULL DEFAULT 'n',
+  is_flapping boolenum NOT NULL DEFAULT 'n',
+  is_overdue boolenum NOT NULL DEFAULT 'n',
+
+  is_acknowledged acked NOT NULL DEFAULT 'n',
+  acknowledgement_comment_id bytea20 DEFAULT NULL,
+  last_comment_id bytea20 DEFAULT NULL,
+
+  in_downtime boolenum NOT NULL DEFAULT 'n',
+
+  execution_time uint DEFAULT NULL,
+  latency uint DEFAULT NULL,
+  check_timeout uint DEFAULT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  last_update biguint DEFAULT NULL,
+  last_state_change biguint NOT NULL,
+  next_check biguint NOT NULL,
+  next_update biguint NOT NULL,
+
+  CONSTRAINT pk_host_state PRIMARY KEY (id)
+);
+
+ALTER TABLE host_state ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE host_state ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE host_state ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE host_state ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE host_state ALTER COLUMN acknowledgement_comment_id SET STORAGE PLAIN;
+ALTER TABLE host_state ALTER COLUMN last_comment_id SET STORAGE PLAIN;
+
+CREATE UNIQUE INDEX idx_host_state_host_id ON host_state(host_id);
+CREATE INDEX idx_host_state_is_problem ON host_state(is_problem, severity);
+CREATE INDEX idx_host_state_severity ON host_state(severity);
+CREATE INDEX idx_host_state_soft_state ON host_state(soft_state, last_state_change);
+CREATE INDEX idx_host_state_last_state_change ON host_state(last_state_change);
+
+COMMENT ON COLUMN host_state.id IS 'host.id';
+COMMENT ON COLUMN host_state.host_id IS 'host.id';
+COMMENT ON COLUMN host_state.environment_id IS 'environment.id';
+COMMENT ON COLUMN host_state.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN host_state.acknowledgement_comment_id IS 'comment.id';
+COMMENT ON COLUMN host_state.last_comment_id IS 'comment.id';
+
+COMMENT ON INDEX idx_host_state_is_problem IS 'Host list filtered by is_problem ordered by severity';
+COMMENT ON INDEX idx_host_state_severity IS 'Host list filtered/ordered by severity';
+COMMENT ON INDEX idx_host_state_soft_state IS 'Host list filtered/ordered by soft_state; recently recovered filter';
+COMMENT ON INDEX idx_host_state_last_state_change IS 'Host list filtered/ordered by last_state_change';
+
+CREATE TABLE service (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  checkcommand_name citext NOT NULL,
+  checkcommand_id bytea20 NOT NULL,
+
+  max_check_attempts uint NOT NULL,
+
+  check_timeperiod_name citext NOT NULL,
+  check_timeperiod_id bytea20 DEFAULT NULL,
+
+  check_timeout uint DEFAULT NULL,
+  check_interval uint NOT NULL,
+  check_retry_interval uint NOT NULL,
+
+  active_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  passive_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  event_handler_enabled boolenum NOT NULL DEFAULT 'n',
+  notifications_enabled boolenum NOT NULL DEFAULT 'n',
+
+  flapping_enabled boolenum NOT NULL DEFAULT 'n',
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  perfdata_enabled boolenum NOT NULL DEFAULT 'n',
+
+  eventcommand_name citext NOT NULL,
+  eventcommand_id bytea20 DEFAULT NULL,
+
+  is_volatile boolenum NOT NULL DEFAULT 'n',
+
+  action_url_id bytea20 DEFAULT NULL,
+  notes_url_id bytea20 DEFAULT NULL,
+  notes text NOT NULL,
+  icon_image_id bytea20 DEFAULT NULL,
+  icon_image_alt varchar(32) NOT NULL,
+
+  zone_name citext NOT NULL,
+  zone_id bytea20 DEFAULT NULL,
+
+  command_endpoint_name citext NOT NULL,
+  command_endpoint_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_service PRIMARY KEY (id)
+);
+
+ALTER TABLE service ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN checkcommand_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN check_timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN eventcommand_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN action_url_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN notes_url_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN icon_image_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN zone_id SET STORAGE PLAIN;
+ALTER TABLE service ALTER COLUMN command_endpoint_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_service_display_name ON service(display_name);
+CREATE INDEX idx_service_host_id ON service(host_id, display_name);
+CREATE INDEX idx_service_name_ci ON service(name_ci);
+CREATE INDEX idx_service_name ON service(name);
+
+COMMENT ON COLUMN service.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN service.environment_id IS 'environment.id';
+COMMENT ON COLUMN service.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN service.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN service.host_id IS 'sha1(host.id)';
+COMMENT ON COLUMN service.checkcommand_name IS 'checkcommand.name';
+COMMENT ON COLUMN service.checkcommand_id IS 'checkcommand.id';
+COMMENT ON COLUMN service.check_timeperiod_name IS 'timeperiod.name';
+COMMENT ON COLUMN service.check_timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN service.eventcommand_name IS 'eventcommand.name';
+COMMENT ON COLUMN service.eventcommand_id IS 'eventcommand.id';
+COMMENT ON COLUMN service.action_url_id IS 'action_url.id';
+COMMENT ON COLUMN service.notes_url_id IS 'notes_url.id';
+COMMENT ON COLUMN service.icon_image_id IS 'icon_image.id';
+COMMENT ON COLUMN service.zone_name IS 'zone.name';
+COMMENT ON COLUMN service.zone_id IS 'zone.id';
+COMMENT ON COLUMN service.command_endpoint_name IS 'endpoint.name';
+COMMENT ON COLUMN service.command_endpoint_id IS 'endpoint.id';
+
+COMMENT ON INDEX idx_service_display_name IS 'Service list filtered/ordered by display_name';
+COMMENT ON INDEX idx_service_host_id IS 'Service list filtered by host and ordered by display_name';
+COMMENT ON INDEX idx_service_name_ci IS 'Service list filtered using quick search';
+COMMENT ON INDEX idx_service_name IS 'Service list filtered/ordered by name; Service detail filter';
+
+CREATE TABLE servicegroup (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_servicegroup PRIMARY KEY (id)
+);
+
+ALTER TABLE servicegroup ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE servicegroup ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE servicegroup ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE servicegroup ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE servicegroup ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN servicegroup.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN servicegroup.environment_id IS 'environment.id';
+COMMENT ON COLUMN servicegroup.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN servicegroup.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN servicegroup.zone_id IS 'zone.id';
+
+CREATE INDEX idx_servicegroup_display_name ON servicegroup(display_name);
+CREATE INDEX idx_servicegroup_name_ci ON servicegroup(name_ci);
+CREATE INDEX idx_servicegroup_name ON servicegroup(name);
+COMMENT ON INDEX idx_servicegroup_display_name IS 'Servicegroup list filtered/ordered by display_name';
+COMMENT ON INDEX idx_servicegroup_name_ci IS 'Servicegroup list filtered using quick search';
+COMMENT ON INDEX idx_servicegroup_name IS 'Host/service/service group list filtered by service group name; Servicegroup detail filter';
+
+CREATE TABLE servicegroup_member (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  service_id bytea20 NOT NULL,
+  servicegroup_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_servicegroup_member PRIMARY KEY (id)
+);
+
+ALTER TABLE servicegroup_member ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_member ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_member ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_member ALTER COLUMN servicegroup_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_servicegroup_member_service_id ON servicegroup_member(service_id, servicegroup_id);
+CREATE INDEX idx_servicegroup_member_servicegroup_id ON servicegroup_member(servicegroup_id, service_id);
+
+COMMENT ON COLUMN servicegroup_member.id IS 'sha1(environment.id + servicegroup_id + service_id)';
+COMMENT ON COLUMN servicegroup_member.environment_id IS 'environment.id';
+COMMENT ON COLUMN servicegroup_member.service_id IS 'service.id';
+COMMENT ON COLUMN servicegroup_member.servicegroup_id IS 'servicegroup.id';
+
+CREATE TABLE service_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  service_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_service_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE service_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE service_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE service_customvar ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE service_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_service_customvar_service_id ON service_customvar(service_id, customvar_id);
+CREATE INDEX idx_service_customvar_customvar_id ON service_customvar(customvar_id, service_id);
+
+COMMENT ON COLUMN service_customvar.id IS 'sha1(environment.id + service_id + customvar_id)';
+COMMENT ON COLUMN service_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN service_customvar.service_id IS 'service.id';
+COMMENT ON COLUMN service_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE servicegroup_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  servicegroup_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_servicegroup_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE servicegroup_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_customvar ALTER COLUMN servicegroup_id SET STORAGE PLAIN;
+ALTER TABLE servicegroup_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_servicegroup_customvar_servicegroup_id ON servicegroup_customvar(servicegroup_id, customvar_id);
+CREATE INDEX idx_servicegroup_customvar_customvar_id ON servicegroup_customvar(customvar_id, servicegroup_id);
+
+COMMENT ON COLUMN servicegroup_customvar.id IS 'sha1(environment.id + servicegroup_id + customvar_id)';
+COMMENT ON COLUMN servicegroup_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN servicegroup_customvar.servicegroup_id IS 'servicegroup.id';
+COMMENT ON COLUMN servicegroup_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE service_state (
+  id bytea20 NOT NULL,
+  host_id bytea20 NOT NULL,
+  service_id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  state_type state_type NOT NULL DEFAULT 'hard',
+  soft_state tinyuint NOT NULL,
+  hard_state tinyuint NOT NULL,
+  previous_soft_state tinyuint NOT NULL,
+  previous_hard_state tinyuint NOT NULL,
+  check_attempt tinyuint NOT NULL,
+  severity smalluint NOT NULL,
+
+  output text DEFAULT NULL,
+  long_output text DEFAULT NULL,
+  performance_data text DEFAULT NULL,
+  normalized_performance_data text DEFAULT NULL,
+
+  check_commandline text DEFAULT NULL,
+
+  is_problem boolenum NOT NULL DEFAULT 'n',
+  is_handled boolenum NOT NULL DEFAULT 'n',
+  is_reachable boolenum NOT NULL DEFAULT 'n',
+  is_flapping boolenum NOT NULL DEFAULT 'n',
+  is_overdue boolenum NOT NULL DEFAULT 'n',
+
+  is_acknowledged acked NOT NULL DEFAULT 'n',
+  acknowledgement_comment_id bytea20 DEFAULT NULL,
+  last_comment_id bytea20 DEFAULT NULL,
+
+  in_downtime boolenum NOT NULL DEFAULT 'n',
+
+  execution_time uint DEFAULT NULL,
+  latency uint DEFAULT NULL,
+  check_timeout uint DEFAULT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  last_update biguint DEFAULT NULL,
+  last_state_change biguint NOT NULL,
+  next_check biguint NOT NULL,
+  next_update biguint NOT NULL,
+
+  CONSTRAINT pk_service_state PRIMARY KEY (id)
+);
+
+ALTER TABLE service_state ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN acknowledgement_comment_id SET STORAGE PLAIN;
+ALTER TABLE service_state ALTER COLUMN last_comment_id SET STORAGE PLAIN;
+
+CREATE UNIQUE INDEX idx_service_state_service_id ON service_state(service_id);
+CREATE INDEX idx_service_state_is_problem ON service_state(is_problem, severity);
+CREATE INDEX idx_service_state_severity ON service_state(severity);
+CREATE INDEX idx_service_state_soft_state ON service_state(soft_state, last_state_change);
+CREATE INDEX idx_service_state_last_state_change ON service_state(last_state_change);
+
+COMMENT ON COLUMN service_state.id IS 'service.id';
+COMMENT ON COLUMN service_state.host_id IS 'host.id';
+COMMENT ON COLUMN service_state.service_id IS 'service.id';
+COMMENT ON COLUMN service_state.environment_id IS 'environment.id';
+COMMENT ON COLUMN service_state.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN service_state.acknowledgement_comment_id IS 'comment.id';
+COMMENT ON COLUMN service_state.last_comment_id IS 'comment.id';
+
+COMMENT ON INDEX idx_service_state_is_problem IS 'Service list filtered by is_problem ordered by severity';
+COMMENT ON INDEX idx_service_state_severity IS 'Service list filtered/ordered by severity';
+COMMENT ON INDEX idx_service_state_soft_state IS 'Service list filtered/ordered by soft_state; recently recovered filter';
+COMMENT ON INDEX idx_service_state_last_state_change IS 'Service list filtered/ordered by last_state_change';
+
+CREATE TABLE endpoint (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+
+  zone_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_endpoint PRIMARY KEY (id)
+);
+
+ALTER TABLE endpoint ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE endpoint ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE endpoint ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE endpoint ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE endpoint ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN endpoint.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN endpoint.environment_id IS 'environment.id';
+COMMENT ON COLUMN endpoint.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN endpoint.zone_id IS 'zone.id';
+
+CREATE TABLE environment (
+  id bytea20 NOT NULL,
+  name varchar(255) NOT NULL,
+
+  CONSTRAINT pk_environment PRIMARY KEY (id)
+);
+
+ALTER TABLE environment ALTER COLUMN id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN environment.id IS 'sha1(Icinga CA public key)';
+
+CREATE TABLE icingadb_instance (
+  id bytea16 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  heartbeat biguint NOT NULL,
+  responsible boolenum NOT NULL DEFAULT 'n',
+
+  icinga2_version varchar(255) NOT NULL,
+  icinga2_start_time biguint NOT NULL,
+  icinga2_notifications_enabled boolenum NOT NULL DEFAULT 'n',
+  icinga2_active_service_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  icinga2_active_host_checks_enabled boolenum NOT NULL DEFAULT 'n',
+  icinga2_event_handlers_enabled boolenum NOT NULL DEFAULT 'n',
+  icinga2_flap_detection_enabled boolenum NOT NULL DEFAULT 'n',
+  icinga2_performance_data_enabled boolenum NOT NULL DEFAULT 'n',
+
+  CONSTRAINT pk_icingadb_instance PRIMARY KEY (id)
+);
+
+ALTER TABLE icingadb_instance ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE icingadb_instance ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE icingadb_instance ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN icingadb_instance.id IS 'UUIDv4';
+COMMENT ON COLUMN icingadb_instance.environment_id IS 'environment.id';
+COMMENT ON COLUMN icingadb_instance.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN icingadb_instance.heartbeat IS '*nix timestamp';
+
+CREATE TABLE checkcommand (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  zone_id bytea20 DEFAULT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  command text NOT NULL,
+  timeout uint NOT NULL,
+
+  CONSTRAINT pk_checkcommand PRIMARY KEY (id)
+);
+
+ALTER TABLE checkcommand ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE checkcommand ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand ALTER COLUMN zone_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE checkcommand ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN checkcommand.id IS 'sha1(environment.id + type + name)';
+COMMENT ON COLUMN checkcommand.environment_id IS 'env.id';
+COMMENT ON COLUMN checkcommand.zone_id IS 'zone.id';
+COMMENT ON COLUMN checkcommand.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN checkcommand.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE checkcommand_argument (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  checkcommand_id bytea20 NOT NULL,
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override citext DEFAULT NULL,
+  repeat_key boolenum NOT NULL DEFAULT 'n',
+  required boolenum NOT NULL DEFAULT 'n',
+  set_if varchar(255) DEFAULT NULL,
+  separator varchar(255) DEFAULT NULL,
+  skip_key boolenum NOT NULL DEFAULT 'n',
+
+  CONSTRAINT pk_checkcommand_argument PRIMARY KEY (id)
+);
+
+ALTER TABLE checkcommand_argument ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_argument ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_argument ALTER COLUMN checkcommand_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_argument ALTER COLUMN argument_key SET STORAGE PLAIN;
+ALTER TABLE checkcommand_argument ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN checkcommand_argument.id IS 'sha1(environment.id + checkcommand_id + argument_key)';
+COMMENT ON COLUMN checkcommand_argument.environment_id IS 'env.id';
+COMMENT ON COLUMN checkcommand_argument.checkcommand_id IS 'checkcommand.id';
+COMMENT ON COLUMN checkcommand_argument.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE checkcommand_envvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  checkcommand_id bytea20 NOT NULL,
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  envvar_value text NOT NULL,
+
+  CONSTRAINT pk_checkcommand_envvar PRIMARY KEY (id)
+);
+
+ALTER TABLE checkcommand_envvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_envvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_envvar ALTER COLUMN checkcommand_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_envvar ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN checkcommand_envvar.id IS 'sha1(environment.id + checkcommand_id + envvar_key)';
+COMMENT ON COLUMN checkcommand_envvar.environment_id IS 'env.id';
+COMMENT ON COLUMN checkcommand_envvar.checkcommand_id IS 'checkcommand.id';
+COMMENT ON COLUMN checkcommand_envvar.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE checkcommand_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+
+  checkcommand_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_checkcommand_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE checkcommand_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_customvar ALTER COLUMN checkcommand_id SET STORAGE PLAIN;
+ALTER TABLE checkcommand_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_checkcommand_customvar_checkcommand_id ON checkcommand_customvar(checkcommand_id, customvar_id);
+CREATE INDEX idx_checkcommand_customvar_customvar_id ON checkcommand_customvar(customvar_id, checkcommand_id);
+
+COMMENT ON COLUMN checkcommand_customvar.id IS 'sha1(environment.id + checkcommand_id + customvar_id)';
+COMMENT ON COLUMN checkcommand_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN checkcommand_customvar.checkcommand_id IS 'checkcommand.id';
+COMMENT ON COLUMN checkcommand_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE eventcommand (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  zone_id bytea20 DEFAULT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  command text NOT NULL,
+  timeout smalluint NOT NULL,
+
+  CONSTRAINT pk_eventcommand PRIMARY KEY (id)
+);
+
+ALTER TABLE eventcommand ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE eventcommand ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand ALTER COLUMN zone_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE eventcommand ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN eventcommand.id IS 'sha1(environment.id + type + name)';
+COMMENT ON COLUMN eventcommand.environment_id IS 'env.id';
+COMMENT ON COLUMN eventcommand.zone_id IS 'zone.id';
+COMMENT ON COLUMN eventcommand.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN eventcommand.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE eventcommand_argument (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  eventcommand_id bytea20 NOT NULL,
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override citext DEFAULT NULL,
+  repeat_key boolenum NOT NULL DEFAULT 'n',
+  required boolenum NOT NULL DEFAULT 'n',
+  set_if varchar(255) DEFAULT NULL,
+  separator varchar(255) DEFAULT NULL,
+  skip_key boolenum NOT NULL DEFAULT 'n',
+
+  CONSTRAINT pk_eventcommand_argument PRIMARY KEY (id)
+);
+
+ALTER TABLE eventcommand_argument ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_argument ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_argument ALTER COLUMN eventcommand_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_argument ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN eventcommand_argument.id IS 'sha1(environment.id + eventcommand_id + argument_key)';
+COMMENT ON COLUMN eventcommand_argument.environment_id IS 'env.id';
+COMMENT ON COLUMN eventcommand_argument.eventcommand_id IS 'eventcommand.id';
+COMMENT ON COLUMN eventcommand_argument.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE eventcommand_envvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  eventcommand_id bytea20 NOT NULL,
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  envvar_value text NOT NULL,
+
+  CONSTRAINT pk_eventcommand_envvar PRIMARY KEY (id)
+);
+
+ALTER TABLE eventcommand_envvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_envvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_envvar ALTER COLUMN eventcommand_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_envvar ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN eventcommand_envvar.id IS 'sha1(environment.id + eventcommand_id + envvar_key)';
+COMMENT ON COLUMN eventcommand_envvar.environment_id IS 'env.id';
+COMMENT ON COLUMN eventcommand_envvar.eventcommand_id IS 'eventcommand.id';
+COMMENT ON COLUMN eventcommand_envvar.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE eventcommand_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  eventcommand_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_eventcommand_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE eventcommand_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_customvar ALTER COLUMN eventcommand_id SET STORAGE PLAIN;
+ALTER TABLE eventcommand_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_eventcommand_customvar_eventcommand_id ON eventcommand_customvar(eventcommand_id, customvar_id);
+CREATE INDEX idx_eventcommand_customvar_customvar_id ON eventcommand_customvar(customvar_id, eventcommand_id);
+
+COMMENT ON COLUMN eventcommand_customvar.id IS 'sha1(environment.id + eventcommand_id + customvar_id)';
+COMMENT ON COLUMN eventcommand_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN eventcommand_customvar.eventcommand_id IS 'eventcommand.id';
+COMMENT ON COLUMN eventcommand_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE notificationcommand (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  zone_id bytea20 DEFAULT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  command text NOT NULL,
+  timeout smalluint NOT NULL,
+
+  CONSTRAINT pk_notificationcommand PRIMARY KEY (id)
+);
+
+ALTER TABLE notificationcommand ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand ALTER COLUMN zone_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE notificationcommand ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN notificationcommand.id IS 'sha1(environment.id + type + name)';
+COMMENT ON COLUMN notificationcommand.environment_id IS 'env.id';
+COMMENT ON COLUMN notificationcommand.zone_id IS 'zone.id';
+COMMENT ON COLUMN notificationcommand.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN notificationcommand.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE notificationcommand_argument (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notificationcommand_id bytea20 NOT NULL,
+  argument_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  argument_value text DEFAULT NULL,
+  argument_order smallint DEFAULT NULL,
+  description text DEFAULT NULL,
+  argument_key_override citext DEFAULT NULL,
+  repeat_key boolenum NOT NULL DEFAULT 'n',
+  required boolenum NOT NULL DEFAULT 'n',
+  set_if varchar(255) DEFAULT NULL,
+  separator varchar(255) DEFAULT NULL,
+  skip_key boolenum NOT NULL DEFAULT 'n',
+
+  CONSTRAINT pk_notificationcommand_argument PRIMARY KEY (id)
+);
+
+ALTER TABLE notificationcommand_argument ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_argument ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_argument ALTER COLUMN notificationcommand_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_argument ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN notificationcommand_argument.id IS 'sha1(environment.id + notificationcommand_id + argument_key)';
+COMMENT ON COLUMN notificationcommand_argument.environment_id IS 'env.id';
+COMMENT ON COLUMN notificationcommand_argument.notificationcommand_id IS 'notificationcommand.id';
+COMMENT ON COLUMN notificationcommand_argument.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE notificationcommand_envvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notificationcommand_id bytea20 NOT NULL,
+  envvar_key varchar(64) NOT NULL,
+
+  properties_checksum bytea20 NOT NULL,
+
+  envvar_value text NOT NULL,
+
+  CONSTRAINT pk_notificationcommand_envvar PRIMARY KEY (id)
+);
+
+ALTER TABLE notificationcommand_envvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_envvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_envvar ALTER COLUMN notificationcommand_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_envvar ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN notificationcommand_envvar.id IS 'sha1(environment.id + notificationcommand_id + envvar_key)';
+COMMENT ON COLUMN notificationcommand_envvar.environment_id IS 'env.id';
+COMMENT ON COLUMN notificationcommand_envvar.notificationcommand_id IS 'notificationcommand.id';
+COMMENT ON COLUMN notificationcommand_envvar.properties_checksum IS 'sha1(all properties)';
+
+CREATE TABLE notificationcommand_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notificationcommand_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_notificationcommand_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE notificationcommand_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_customvar ALTER COLUMN notificationcommand_id SET STORAGE PLAIN;
+ALTER TABLE notificationcommand_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notificationcommand_customvar_notificationcommand_id ON notificationcommand_customvar(notificationcommand_id, customvar_id);
+CREATE INDEX idx_notificationcommand_customvar_customvar_id ON notificationcommand_customvar(customvar_id, notificationcommand_id);
+
+COMMENT ON COLUMN notificationcommand_customvar.id IS 'sha1(environment.id + notificationcommand_id + customvar_id)';
+COMMENT ON COLUMN notificationcommand_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN notificationcommand_customvar.notificationcommand_id IS 'notificationcommand.id';
+COMMENT ON COLUMN notificationcommand_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE comment (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+  name varchar(548) NOT NULL,
+
+  author citext NOT NULL,
+  text text NOT NULL,
+  entry_type comment_type NOT NULL DEFAULT 'comment',
+  entry_time biguint NOT NULL,
+  is_persistent boolenum NOT NULL DEFAULT 'n',
+  is_sticky boolenum NOT NULL DEFAULT 'n',
+  expire_time biguint DEFAULT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_comment PRIMARY KEY (id)
+);
+
+ALTER TABLE comment ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE comment ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_comment_name ON comment(name);
+CREATE INDEX idx_comment_entry_time ON comment(entry_time);
+CREATE INDEX idx_comment_author ON comment(author);
+CREATE INDEX idx_comment_expire_time ON comment(expire_time);
+
+COMMENT ON COLUMN comment.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN comment.environment_id IS 'environment.id';
+COMMENT ON COLUMN comment.host_id IS 'host.id';
+COMMENT ON COLUMN comment.service_id IS 'service.id';
+COMMENT ON COLUMN comment.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN comment.name IS '255+1+255+1+36, i.e. "host.name!service.name!UUID"';
+COMMENT ON COLUMN comment.zone_id IS 'zone.id';
+
+COMMENT ON INDEX idx_comment_name IS 'Comment detail filter';
+COMMENT ON INDEX idx_comment_entry_time IS 'Comment list fileted/ordered by entry_time';
+COMMENT ON INDEX idx_comment_author IS 'Comment list filtered/ordered by author';
+COMMENT ON INDEX idx_comment_expire_time IS 'Comment list filtered/ordered by expire_time';
+
+CREATE TABLE downtime (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+
+  triggered_by_id bytea20 DEFAULT NULL,
+  parent_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+  name varchar(548) NOT NULL,
+
+  author citext NOT NULL,
+  comment text NOT NULL,
+  entry_time biguint NOT NULL,
+  scheduled_start_time biguint NOT NULL,
+  scheduled_end_time biguint NOT NULL,
+  scheduled_duration biguint NOT NULL,
+  is_flexible boolenum NOT NULL DEFAULT 'n',
+  flexible_duration biguint NOT NULL,
+
+  is_in_effect boolenum NOT NULL DEFAULT 'n',
+  start_time biguint DEFAULT NULL,
+  end_time biguint DEFAULT NULL,
+  duration biguint NOT NULL,
+  scheduled_by varchar(767) DEFAULT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_downtime PRIMARY KEY (id)
+);
+
+ALTER TABLE downtime ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN triggered_by_id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN parent_id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE downtime ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_downtime_is_in_effect ON downtime(is_in_effect, start_time);
+CREATE INDEX idx_downtime_name ON downtime(name);
+CREATE INDEX idx_downtime_entry_time ON downtime(entry_time);
+CREATE INDEX idx_downtime_start_time ON downtime(start_time);
+CREATE INDEX idx_downtime_end_time ON downtime(end_time);
+CREATE INDEX idx_downtime_scheduled_start_time ON downtime(scheduled_start_time);
+CREATE INDEX idx_downtime_scheduled_end_time ON downtime(scheduled_end_time);
+CREATE INDEX idx_downtime_author ON downtime(author);
+CREATE INDEX idx_downtime_duration ON downtime(duration);
+
+COMMENT ON COLUMN downtime.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN downtime.environment_id IS 'environment.id';
+COMMENT ON COLUMN downtime.triggered_by_id IS 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.';
+COMMENT ON COLUMN downtime.parent_id IS 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.';
+COMMENT ON COLUMN downtime.host_id IS 'host.id';
+COMMENT ON COLUMN downtime.service_id IS 'service.id';
+COMMENT ON COLUMN downtime.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN downtime.name IS '255+1+255+1+36, i.e. "host.name!service.name!UUID"';
+COMMENT ON COLUMN downtime.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN downtime.start_time IS 'Time when the host went into a problem state during the downtimes timeframe';
+COMMENT ON COLUMN downtime.end_time IS 'Problem state assumed: scheduled_end_time if fixed, start_time + flexible_duration otherwise';
+COMMENT ON COLUMN downtime.duration IS 'Duration of the downtime: When the downtime is flexible, this is the same as flexible_duration otherwise scheduled_duration';
+COMMENT ON COLUMN downtime.scheduled_by IS 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"';
+COMMENT ON COLUMN downtime.zone_id IS 'zone.id';
+
+COMMENT ON INDEX idx_downtime_is_in_effect IS 'Downtime list filtered/ordered by severity';
+COMMENT ON INDEX idx_downtime_name IS 'Downtime detail filter';
+COMMENT ON INDEX idx_downtime_entry_time IS 'Downtime list filtered/ordered by entry_time';
+COMMENT ON INDEX idx_downtime_start_time IS 'Downtime list filtered/ordered by start_time';
+COMMENT ON INDEX idx_downtime_end_time IS 'Downtime list filtered/ordered by end_time';
+COMMENT ON INDEX idx_downtime_scheduled_start_time IS 'Downtime list filtered/ordered by scheduled_start_time';
+COMMENT ON INDEX idx_downtime_scheduled_end_time IS 'Downtime list filtered/ordered by scheduled_end_time';
+COMMENT ON INDEX idx_downtime_author IS 'Downtime list filtered/ordered by author';
+COMMENT ON INDEX idx_downtime_duration IS 'Downtime list filtered/ordered by duration';
+
+CREATE TABLE notification (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(767) NOT NULL,
+  name_ci citext NOT NULL,
+
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+  notificationcommand_id bytea20 NOT NULL,
+
+  times_begin uint DEFAULT NULL,
+  times_end uint DEFAULT NULL,
+  notification_interval uint NOT NULL,
+  timeperiod_id bytea20 DEFAULT NULL,
+
+  states tinyuint NOT NULL,
+  types smalluint NOT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_notification PRIMARY KEY (id)
+);
+
+ALTER TABLE notification ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN notificationcommand_id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE notification ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_host_id ON notification(host_id);
+CREATE INDEX idx_notification_service_id ON notification(service_id);
+
+COMMENT ON COLUMN notification.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN notification.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN notification.name IS '255+1+255+1+255, i.e. "host.name!service.name!notification.name"';
+COMMENT ON COLUMN notification.host_id IS 'host.id';
+COMMENT ON COLUMN notification.service_id IS 'service.id';
+COMMENT ON COLUMN notification.notificationcommand_id IS 'command.id';
+COMMENT ON COLUMN notification.timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN notification.zone_id IS 'zone.id';
+
+CREATE TABLE notification_user (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notification_id bytea20 NOT NULL,
+  user_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_notification_user PRIMARY KEY (id)
+);
+
+ALTER TABLE notification_user ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification_user ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification_user ALTER COLUMN notification_id SET STORAGE PLAIN;
+ALTER TABLE notification_user ALTER COLUMN user_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_user_user_id ON notification_user(user_id, notification_id);
+CREATE INDEX idx_notification_user_notification_id ON notification_user(notification_id, user_id);
+
+COMMENT ON COLUMN notification_user.id IS 'sha1(environment.id + notification_id + user_id)';
+COMMENT ON COLUMN notification_user.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification_user.notification_id IS 'notification.id';
+COMMENT ON COLUMN notification_user.user_id IS 'user.id';
+
+CREATE TABLE notification_usergroup (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notification_id bytea20 NOT NULL,
+  usergroup_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_notification_usergroup PRIMARY KEY (id)
+);
+
+ALTER TABLE notification_usergroup ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification_usergroup ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification_usergroup ALTER COLUMN notification_id SET STORAGE PLAIN;
+ALTER TABLE notification_usergroup ALTER COLUMN usergroup_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_usergroup_usergroup_id ON notification_usergroup(usergroup_id, notification_id);
+CREATE INDEX idx_notification_usergroup_notification_id ON notification_usergroup(notification_id, usergroup_id);
+
+COMMENT ON COLUMN notification_usergroup.id IS 'sha1(environment.id + notification_id + usergroup_id)';
+COMMENT ON COLUMN notification_usergroup.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification_usergroup.notification_id IS 'notification.id';
+COMMENT ON COLUMN notification_usergroup.usergroup_id IS 'usergroup.id';
+
+CREATE TABLE notification_recipient (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notification_id bytea20 NOT NULL,
+  user_id bytea20 NULL,
+  usergroup_id bytea20 NULL,
+
+  CONSTRAINT pk_notification_recipient PRIMARY KEY (id)
+);
+
+ALTER TABLE notification_recipient ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification_recipient ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification_recipient ALTER COLUMN notification_id SET STORAGE PLAIN;
+ALTER TABLE notification_recipient ALTER COLUMN user_id SET STORAGE PLAIN;
+ALTER TABLE notification_recipient ALTER COLUMN usergroup_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_recipient_user_id ON notification_recipient(user_id, notification_id);
+CREATE INDEX idx_notification_recipient_notification_id_user ON notification_recipient(notification_id, user_id);
+CREATE INDEX idx_notification_recipient_usergroup_id ON notification_recipient(usergroup_id, notification_id);
+CREATE INDEX idx_notification_recipient_notification_id_usergroup ON notification_recipient(notification_id, usergroup_id);
+
+COMMENT ON COLUMN notification_recipient.id IS 'sha1(environment.id + notification_id + (user_id | usergroup_id))';
+COMMENT ON COLUMN notification_recipient.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification_recipient.notification_id IS 'notification.id';
+COMMENT ON COLUMN notification_recipient.user_id IS 'user.id';
+COMMENT ON COLUMN notification_recipient.usergroup_id IS 'usergroup.id';
+
+CREATE TABLE notification_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notification_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_notification_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE notification_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification_customvar ALTER COLUMN notification_id SET STORAGE PLAIN;
+ALTER TABLE notification_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_customvar_notification_id ON notification_customvar(notification_id, customvar_id);
+CREATE INDEX idx_notification_customvar_customvar_id ON notification_customvar(customvar_id, notification_id);
+
+COMMENT ON COLUMN notification_customvar.id IS 'sha1(environment.id + notification_id + customvar_id)';
+COMMENT ON COLUMN notification_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification_customvar.notification_id IS 'notification.id';
+COMMENT ON COLUMN notification_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE icon_image (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  icon_image citext NOT NULL,
+
+  CONSTRAINT pk_icon_image PRIMARY KEY (id)
+);
+
+ALTER TABLE icon_image ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE icon_image ALTER COLUMN environment_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_icon_image ON icon_image(icon_image);
+
+COMMENT ON COLUMN icon_image.id IS 'sha1(environment.id + icon_image)';
+COMMENT ON COLUMN icon_image.environment_id IS 'environment.id';
+
+CREATE TABLE action_url (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  action_url citext NOT NULL,
+
+  CONSTRAINT pk_action_url PRIMARY KEY (id)
+);
+
+ALTER TABLE action_url ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE action_url ALTER COLUMN environment_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_action_url ON action_url(action_url);
+
+COMMENT ON COLUMN action_url.id IS 'sha1(environment.id + action_url)';
+COMMENT ON COLUMN action_url.environment_id IS 'environment.id';
+
+CREATE TABLE notes_url (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notes_url citext NOT NULL,
+
+  CONSTRAINT pk_notes_url PRIMARY KEY (id)
+);
+
+ALTER TABLE notes_url ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notes_url ALTER COLUMN environment_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notes_url ON notes_url(notes_url);
+
+COMMENT ON COLUMN notes_url.id IS 'sha1(environment.id + notes_url)';
+COMMENT ON COLUMN notes_url.environment_id IS 'environment.id';
+
+CREATE TABLE timeperiod (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+  prefer_includes boolenum NOT NULL DEFAULT 'n',
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_timeperiod PRIMARY KEY (id)
+);
+
+ALTER TABLE timeperiod ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE timeperiod ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE timeperiod ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE timeperiod ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN timeperiod.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN timeperiod.environment_id IS 'env.id';
+COMMENT ON COLUMN timeperiod.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN timeperiod.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN timeperiod.zone_id IS 'zone.id';
+
+CREATE TABLE timeperiod_range (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  timeperiod_id bytea20 NOT NULL,
+  range_key citext NOT NULL,
+
+  range_value varchar(255) NOT NULL,
+
+  CONSTRAINT pk_timeperiod_range PRIMARY KEY (id)
+);
+
+ALTER TABLE timeperiod_range ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_range ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_range ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN timeperiod_range.id IS 'sha1(environment.id + range_id + timeperiod_id)';
+COMMENT ON COLUMN timeperiod_range.environment_id IS 'env.id';
+COMMENT ON COLUMN timeperiod_range.timeperiod_id IS 'timeperiod.id';
+
+CREATE TABLE timeperiod_override_include (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  timeperiod_id bytea20 NOT NULL,
+  override_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_timeperiod_override_include PRIMARY KEY (id)
+);
+
+ALTER TABLE timeperiod_override_include ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_include ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_include ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_include ALTER COLUMN override_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN timeperiod_override_include.id IS 'sha1(environment.id + include_id + timeperiod_id)';
+COMMENT ON COLUMN timeperiod_override_include.environment_id IS 'env.id';
+COMMENT ON COLUMN timeperiod_override_include.timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN timeperiod_override_include.override_id IS 'timeperiod.id';
+
+CREATE TABLE timeperiod_override_exclude (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  timeperiod_id bytea20 NOT NULL,
+  override_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_timeperiod_override_exclude PRIMARY KEY (id)
+);
+
+ALTER TABLE timeperiod_override_exclude ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_exclude ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_exclude ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_override_exclude ALTER COLUMN override_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN timeperiod_override_exclude.id IS 'sha1(environment.id + exclude_id + timeperiod_id)';
+COMMENT ON COLUMN timeperiod_override_exclude.environment_id IS 'env.id';
+COMMENT ON COLUMN timeperiod_override_exclude.timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN timeperiod_override_exclude.override_id IS 'timeperiod.id';
+
+CREATE TABLE timeperiod_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  timeperiod_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_timeperiod_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE timeperiod_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_customvar ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE timeperiod_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_timeperiod_customvar_timeperiod_id ON timeperiod_customvar(timeperiod_id, customvar_id);
+CREATE INDEX idx_timeperiod_customvar_customvar_id ON timeperiod_customvar(customvar_id, timeperiod_id);
+
+COMMENT ON COLUMN timeperiod_customvar.id IS 'sha1(environment.id + timeperiod_id + customvar_id)';
+COMMENT ON COLUMN timeperiod_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN timeperiod_customvar.timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN timeperiod_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+
+  name citext NOT NULL,
+  value text NOT NULL,
+
+  CONSTRAINT pk_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE customvar ALTER COLUMN name_checksum SET STORAGE PLAIN;
+
+COMMENT ON COLUMN customvar.id IS 'sha1(environment.id + name + value)';
+COMMENT ON COLUMN customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN customvar.name_checksum IS 'sha1(name)';
+
+CREATE TABLE customvar_flat (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+  flatname_checksum bytea20 NOT NULL,
+
+  flatname citext NOT NULL,
+  flatvalue text DEFAULT NULL,
+
+  CONSTRAINT pk_customvar_flat PRIMARY KEY (id)
+);
+
+ALTER TABLE customvar_flat ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE customvar_flat ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE customvar_flat ALTER COLUMN customvar_id SET STORAGE PLAIN;
+ALTER TABLE customvar_flat ALTER COLUMN flatname_checksum SET STORAGE PLAIN;
+
+CREATE INDEX idx_customvar_flat_customvar_id ON customvar_flat(customvar_id);
+CREATE INDEX idx_customvar_flat_flatname_flatvalue ON customvar_flat(flatname, flatvalue);
+
+COMMENT ON COLUMN customvar_flat.id IS 'sha1(environment.id + flatname + flatvalue)';
+COMMENT ON COLUMN customvar_flat.environment_id IS 'environment.id';
+COMMENT ON COLUMN customvar_flat.customvar_id IS 'sha1(customvar.id)';
+COMMENT ON COLUMN customvar_flat.flatname_checksum IS 'sha1(flatname after conversion)';
+COMMENT ON COLUMN customvar_flat.flatname IS 'Path converted with `.` and `[ ]`';
+
+COMMENT ON INDEX idx_customvar_flat_flatname_flatvalue IS 'Lists filtered by custom variable';
+
+CREATE TABLE "user" (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  email varchar(255) NOT NULL,
+  pager varchar(255) NOT NULL,
+
+  notifications_enabled boolenum NOT NULL DEFAULT 'n',
+
+  timeperiod_id bytea20 DEFAULT NULL,
+
+  states tinyuint NOT NULL,
+  types smalluint NOT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_user PRIMARY KEY (id)
+);
+
+ALTER TABLE "user" ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE "user" ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE "user" ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE "user" ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE "user" ALTER COLUMN timeperiod_id SET STORAGE PLAIN;
+ALTER TABLE "user" ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_user_display_name ON "user"(display_name);
+CREATE INDEX idx_user_name_ci ON "user"(name_ci);
+CREATE INDEX idx_user_name ON "user"(name);
+
+COMMENT ON COLUMN "user".id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN "user".environment_id IS 'environment.id';
+COMMENT ON COLUMN "user".name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN "user".properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN "user".timeperiod_id IS 'timeperiod.id';
+COMMENT ON COLUMN "user".zone_id IS 'zone.id';
+
+COMMENT ON INDEX idx_user_display_name IS 'User list filtered/ordered by display_name';
+COMMENT ON INDEX idx_user_name_ci IS 'User list filtered using quick search';
+COMMENT ON INDEX idx_user_name IS 'User list filtered/ordered by name; User detail filter';
+
+CREATE TABLE usergroup (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+  display_name citext NOT NULL,
+
+  zone_id bytea20 DEFAULT NULL,
+
+  CONSTRAINT pk_usergroup PRIMARY KEY (id)
+);
+
+ALTER TABLE usergroup ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE usergroup ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE usergroup ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE usergroup ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE usergroup ALTER COLUMN zone_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_usergroup_display_name ON usergroup(display_name);
+CREATE INDEX idx_usergroup_name_ci ON usergroup(name_ci);
+CREATE INDEX idx_usergroup_name ON usergroup(name);
+
+COMMENT ON COLUMN usergroup.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN usergroup.environment_id IS 'environment.id';
+COMMENT ON COLUMN usergroup.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN usergroup.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN usergroup.zone_id IS 'zone.id';
+
+COMMENT ON INDEX idx_usergroup_display_name IS 'Usergroup list filtered/ordered by display_name';
+COMMENT ON INDEX idx_usergroup_name_ci IS 'Usergroup list filtered using quick search';
+COMMENT ON INDEX idx_usergroup_name IS 'Usergroup list filtered/ordered by name; User detail filter';
+
+CREATE TABLE usergroup_member (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  user_id bytea20 NOT NULL,
+  usergroup_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_usergroup_member PRIMARY KEY (id)
+);
+
+ALTER TABLE usergroup_member ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE usergroup_member ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE usergroup_member ALTER COLUMN user_id SET STORAGE PLAIN;
+ALTER TABLE usergroup_member ALTER COLUMN usergroup_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_usergroup_member_user_id ON usergroup_member(user_id, usergroup_id);
+CREATE INDEX idx_usergroup_member_usergroup_id ON usergroup_member(usergroup_id, user_id);
+
+COMMENT ON COLUMN usergroup_member.id IS 'sha1(environment.id + usergroup_id + user_id)';
+COMMENT ON COLUMN usergroup_member.environment_id IS 'environment.id';
+COMMENT ON COLUMN usergroup_member.user_id IS 'user.id';
+COMMENT ON COLUMN usergroup_member.usergroup_id IS 'usergroup.id';
+
+CREATE TABLE user_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  user_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_user_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE user_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE user_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE user_customvar ALTER COLUMN user_id SET STORAGE PLAIN;
+ALTER TABLE user_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_user_customvar_user_id ON user_customvar(user_id, customvar_id);
+CREATE INDEX idx_user_customvar_customvar_id ON user_customvar(customvar_id, user_id);
+
+COMMENT ON COLUMN user_customvar.id IS 'sha1(environment.id + user_id + customvar_id)';
+COMMENT ON COLUMN user_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN user_customvar.user_id IS 'user.id';
+COMMENT ON COLUMN user_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE usergroup_customvar (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  usergroup_id bytea20 NOT NULL,
+  customvar_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_usergroup_customvar PRIMARY KEY (id)
+);
+
+ALTER TABLE usergroup_customvar ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE usergroup_customvar ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE usergroup_customvar ALTER COLUMN usergroup_id SET STORAGE PLAIN;
+ALTER TABLE usergroup_customvar ALTER COLUMN customvar_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_usergroup_customvar_usergroup_id ON usergroup_customvar(usergroup_id, customvar_id);
+CREATE INDEX idx_usergroup_customvar_customvar_id ON usergroup_customvar(customvar_id, usergroup_id);
+
+COMMENT ON COLUMN usergroup_customvar.id IS 'sha1(environment.id + usergroup_id + customvar_id)';
+COMMENT ON COLUMN usergroup_customvar.environment_id IS 'environment.id';
+COMMENT ON COLUMN usergroup_customvar.usergroup_id IS 'usergroup.id';
+COMMENT ON COLUMN usergroup_customvar.customvar_id IS 'customvar.id';
+
+CREATE TABLE zone (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  name_checksum bytea20 NOT NULL,
+  properties_checksum bytea20 NOT NULL,
+
+  name varchar(255) NOT NULL,
+  name_ci citext NOT NULL,
+
+  is_global boolenum NOT NULL DEFAULT 'n',
+  parent_id bytea20 DEFAULT NULL,
+
+  depth tinyuint NOT NULL,
+
+  CONSTRAINT pk_zone PRIMARY KEY (id)
+);
+
+ALTER TABLE zone ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE zone ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE zone ALTER COLUMN name_checksum SET STORAGE PLAIN;
+ALTER TABLE zone ALTER COLUMN properties_checksum SET STORAGE PLAIN;
+ALTER TABLE zone ALTER COLUMN parent_id SET STORAGE PLAIN;
+
+CREATE UNIQUE INDEX idx_environment_id_id ON zone(environment_id, id);
+CREATE INDEX idx_zone_parent_id ON zone(parent_id);
+
+COMMENT ON COLUMN zone.id IS 'sha1(environment.id + name)';
+COMMENT ON COLUMN zone.environment_id IS 'environment.id';
+COMMENT ON COLUMN zone.name_checksum IS 'sha1(name)';
+COMMENT ON COLUMN zone.properties_checksum IS 'sha1(all properties)';
+COMMENT ON COLUMN zone.parent_id IS 'zone.id';
+
+CREATE TABLE notification_history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+  notification_id bytea20 NOT NULL,
+
+  type notification_type NOT NULL DEFAULT 'downtime_start',
+  send_time biguint NOT NULL,
+  state tinyuint NOT NULL,
+  previous_hard_state tinyuint NOT NULL,
+  author text NOT NULL,
+  "text" text NOT NULL,
+  users_notified smalluint NOT NULL,
+
+  CONSTRAINT pk_notification_history PRIMARY KEY (id)
+);
+
+ALTER TABLE notification_history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE notification_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE notification_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE notification_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE notification_history ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE notification_history ALTER COLUMN notification_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_notification_history_send_time ON notification_history(send_time DESC);
+CREATE INDEX idx_notification_history_env_send_time ON notification_history(environment_id, send_time);
+
+COMMENT ON COLUMN notification_history.id IS 'sha1(environment.name + notification.name + type + send_time)';
+COMMENT ON COLUMN notification_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN notification_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN notification_history.host_id IS 'host.id';
+COMMENT ON COLUMN notification_history.service_id IS 'service.id';
+COMMENT ON COLUMN notification_history.notification_id IS 'notification.id';
+
+COMMENT ON INDEX idx_notification_history_send_time IS 'Notification list filtered/ordered by send_time';
+COMMENT ON INDEX idx_notification_history_env_send_time IS 'Filter for history retention';
+
+CREATE TABLE user_notification_history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  notification_history_id bytea20 NOT NULL,
+  user_id bytea20 NOT NULL,
+
+  CONSTRAINT pk_user_notification_history PRIMARY KEY (id),
+
+  CONSTRAINT fk_user_notification_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE
+);
+
+ALTER TABLE user_notification_history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE user_notification_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE user_notification_history ALTER COLUMN notification_history_id SET STORAGE PLAIN;
+ALTER TABLE user_notification_history ALTER COLUMN user_id SET STORAGE PLAIN;
+
+COMMENT ON COLUMN user_notification_history.id IS 'sha1(notification_history_id + user_id)';
+COMMENT ON COLUMN user_notification_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN user_notification_history.notification_history_id IS 'UUID notification_history.id';
+COMMENT ON COLUMN user_notification_history.user_id IS 'user.id';
+
+CREATE TABLE state_history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  event_time biguint NOT NULL,
+  state_type state_type NOT NULL DEFAULT 'hard',
+  soft_state tinyuint NOT NULL,
+  hard_state tinyuint NOT NULL,
+  previous_soft_state tinyuint NOT NULL,
+  previous_hard_state tinyuint NOT NULL,
+  check_attempt tinyuint NOT NULL,
+  output text DEFAULT NULL,
+  long_output text DEFAULT NULL,
+  max_check_attempts uint NOT NULL,
+  check_source text DEFAULT NULL,
+  scheduling_source text DEFAULT NULL,
+
+  CONSTRAINT pk_state_history PRIMARY KEY (id)
+);
+
+ALTER TABLE state_history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE state_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE state_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE state_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE state_history ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_state_history_env_event_time ON state_history(environment_id, event_time);
+
+COMMENT ON COLUMN state_history.id IS 'sha1(environment.name + host|service.name + event_time)';
+COMMENT ON COLUMN state_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN state_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN state_history.host_id IS 'host.id';
+COMMENT ON COLUMN state_history.service_id IS 'service.id';
+
+COMMENT ON INDEX idx_state_history_env_event_time IS 'Filter for history retention';
+
+CREATE TABLE downtime_history (
+  downtime_id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  triggered_by_id bytea20 DEFAULT NULL,
+  parent_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  entry_time biguint NOT NULL,
+  author citext NOT NULL,
+  cancelled_by citext DEFAULT NULL,
+  comment text NOT NULL,
+  is_flexible boolenum NOT NULL DEFAULT 'n',
+  flexible_duration biguint NOT NULL,
+  scheduled_start_time biguint NOT NULL,
+  scheduled_end_time biguint NOT NULL,
+  start_time biguint NOT NULL,
+  end_time biguint NOT NULL,
+  scheduled_by varchar(767) DEFAULT NULL,
+  has_been_cancelled boolenum NOT NULL DEFAULT 'n',
+  trigger_time biguint NOT NULL,
+  cancel_time biguint DEFAULT NULL,
+
+  CONSTRAINT pk_downtime_history PRIMARY KEY (downtime_id)
+);
+
+ALTER TABLE downtime_history ALTER COLUMN downtime_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN triggered_by_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN parent_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE downtime_history ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_downtime_history_env_end_time ON downtime_history(environment_id, end_time);
+
+COMMENT ON COLUMN downtime_history.downtime_id IS 'downtime.id';
+COMMENT ON COLUMN downtime_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN downtime_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN downtime_history.triggered_by_id IS 'The ID of the downtime that triggered this downtime. This is set when creating downtimes on a host or service higher up in the dependency chain using the "child_option" "DowntimeTriggeredChildren" and can also be set manually via the API.';
+COMMENT ON COLUMN downtime_history.parent_id IS 'For service downtimes, the ID of the host downtime that created this downtime by using the "all_services" flag of the schedule-downtime API.';
+COMMENT ON COLUMN downtime_history.host_id IS 'host.id';
+COMMENT ON COLUMN downtime_history.service_id IS 'service.id';
+COMMENT ON COLUMN downtime_history.start_time IS 'Time when the host went into a problem state during the downtimes timeframe';
+COMMENT ON COLUMN downtime_history.end_time IS 'Problem state assumed: scheduled_end_time if fixed, start_time + duration otherwise';
+COMMENT ON COLUMN downtime_history.scheduled_by IS 'Name of the ScheduledDowntime which created this Downtime. 255+1+255+1+255, i.e. "host.name!service.name!scheduled-downtime-name"';
+
+COMMENT ON INDEX idx_downtime_history_env_end_time IS 'Filter for history retention';
+
+CREATE TABLE comment_history (
+  comment_id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  entry_time biguint NOT NULL,
+  author citext NOT NULL,
+  removed_by citext DEFAULT NULL,
+  comment text NOT NULL,
+  entry_type comment_type NOT NULL DEFAULT 'comment',
+  is_persistent boolenum NOT NULL DEFAULT 'n',
+  is_sticky boolenum NOT NULL DEFAULT 'n',
+  expire_time biguint DEFAULT NULL,
+  remove_time biguint DEFAULT NULL,
+  has_been_removed boolenum NOT NULL DEFAULT 'n',
+
+  CONSTRAINT pk_comment_history PRIMARY KEY (comment_id)
+);
+
+ALTER TABLE comment_history ALTER COLUMN comment_id SET STORAGE PLAIN;
+ALTER TABLE comment_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE comment_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE comment_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE comment_history ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_comment_history_env_remove_time ON comment_history(environment_id, remove_time);
+
+COMMENT ON COLUMN comment_history.comment_id IS 'comment.id';
+COMMENT ON COLUMN comment_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN comment_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN comment_history.host_id IS 'host.id';
+COMMENT ON COLUMN comment_history.service_id IS 'service.id';
+
+COMMENT ON INDEX idx_comment_history_env_remove_time IS 'Filter for history retention';
+
+CREATE TABLE flapping_history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  start_time biguint NOT NULL,
+  end_time biguint DEFAULT NULL,
+  percent_state_change_start float DEFAULT NULL,
+  percent_state_change_end float DEFAULT NULL,
+  flapping_threshold_low float NOT NULL,
+  flapping_threshold_high float NOT NULL,
+
+  CONSTRAINT pk_flapping_history PRIMARY KEY (id)
+);
+
+ALTER TABLE flapping_history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE flapping_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE flapping_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE flapping_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE flapping_history ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_flapping_history_env_end_time ON flapping_history(environment_id, end_time);
+
+COMMENT ON COLUMN flapping_history.id IS 'sha1(environment.id + "Host"|"Service" + host|service.name + start_time)';
+COMMENT ON COLUMN flapping_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN flapping_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN flapping_history.host_id IS 'host.id';
+COMMENT ON COLUMN flapping_history.service_id IS 'service.id';
+
+COMMENT ON INDEX idx_flapping_history_env_end_time IS 'Filter for history retention';
+
+CREATE TABLE acknowledgement_history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  set_time biguint NOT NULL,
+  clear_time biguint DEFAULT NULL,
+  author citext DEFAULT NULL,
+  cleared_by citext DEFAULT NULL,
+  comment text DEFAULT NULL,
+  expire_time biguint DEFAULT NULL,
+  is_sticky boolenum DEFAULT NULL,
+  is_persistent boolenum DEFAULT NULL,
+
+  CONSTRAINT pk_acknowledgement_history PRIMARY KEY (id)
+);
+
+ALTER TABLE acknowledgement_history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE acknowledgement_history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE acknowledgement_history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE acknowledgement_history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE acknowledgement_history ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_acknowledgement_history_env_clear_time ON acknowledgement_history(environment_id, clear_time);
+
+COMMENT ON COLUMN acknowledgement_history.id IS 'sha1(environment.id + "Host"|"Service" + host|service.name + set_time)';
+COMMENT ON COLUMN acknowledgement_history.environment_id IS 'environment.id';
+COMMENT ON COLUMN acknowledgement_history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN acknowledgement_history.host_id IS 'host.id';
+COMMENT ON COLUMN acknowledgement_history.service_id IS 'service.id';
+COMMENT ON COLUMN acknowledgement_history.author IS 'NULL if ack_set event happened before Icinga DB history recording';
+COMMENT ON COLUMN acknowledgement_history.comment IS 'NULL if ack_set event happened before Icinga DB history recording';
+COMMENT ON COLUMN acknowledgement_history.is_sticky IS 'NULL if ack_set event happened before Icinga DB history recording';
+COMMENT ON COLUMN acknowledgement_history.is_persistent IS 'NULL if ack_set event happened before Icinga DB history recording';
+
+COMMENT ON INDEX idx_acknowledgement_history_env_clear_time IS 'Filter for history retention';
+
+CREATE TABLE history (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL DEFAULT 'host',
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+  notification_history_id bytea20 DEFAULT NULL,
+  state_history_id bytea20 DEFAULT NULL,
+  downtime_history_id bytea20 DEFAULT NULL,
+  comment_history_id bytea20 DEFAULT NULL,
+  flapping_history_id bytea20 DEFAULT NULL,
+  acknowledgement_history_id bytea20 DEFAULT NULL,
+
+  event_type history_type NOT NULL DEFAULT 'state_change',
+  event_time biguint NOT NULL,
+
+  CONSTRAINT pk_history PRIMARY KEY (id),
+
+  CONSTRAINT fk_history_acknowledgement_history FOREIGN KEY (acknowledgement_history_id) REFERENCES acknowledgement_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_comment_history FOREIGN KEY (comment_history_id) REFERENCES comment_history (comment_id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_downtime_history FOREIGN KEY (downtime_history_id) REFERENCES downtime_history (downtime_id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_flapping_history FOREIGN KEY (flapping_history_id) REFERENCES flapping_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_notification_history FOREIGN KEY (notification_history_id) REFERENCES notification_history (id) ON DELETE CASCADE,
+  CONSTRAINT fk_history_state_history FOREIGN KEY (state_history_id) REFERENCES state_history (id) ON DELETE CASCADE
+);
+
+ALTER TABLE history ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN notification_history_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN state_history_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN downtime_history_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN comment_history_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN flapping_history_id SET STORAGE PLAIN;
+ALTER TABLE history ALTER COLUMN acknowledgement_history_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_history_event_time ON history(event_time);
+CREATE INDEX idx_history_acknowledgement ON history(acknowledgement_history_id);
+CREATE INDEX idx_history_comment ON history(comment_history_id);
+CREATE INDEX idx_history_downtime ON history(downtime_history_id);
+CREATE INDEX idx_history_flapping ON history(flapping_history_id);
+CREATE INDEX idx_history_notification ON history(notification_history_id);
+CREATE INDEX idx_history_state ON history(state_history_id);
+CREATE INDEX idx_history_host_service_id ON history(host_id, service_id, event_time);
+
+COMMENT ON COLUMN history.id IS 'sha1(environment.name + event_type + x...) given that sha1(environment.name + x...) = *_history_id';
+COMMENT ON COLUMN history.environment_id IS 'environment.id';
+COMMENT ON COLUMN history.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN history.host_id IS 'host.id';
+COMMENT ON COLUMN history.service_id IS 'service.id';
+COMMENT ON COLUMN history.notification_history_id IS 'notification_history.id';
+COMMENT ON COLUMN history.state_history_id IS 'state_history.id';
+COMMENT ON COLUMN history.downtime_history_id IS 'downtime_history.downtime_id';
+COMMENT ON COLUMN history.comment_history_id IS 'comment_history.comment_id';
+COMMENT ON COLUMN history.flapping_history_id IS 'flapping_history.id';
+COMMENT ON COLUMN history.acknowledgement_history_id IS 'acknowledgement_history.id';
+
+COMMENT ON INDEX idx_history_event_time IS 'History filtered/ordered by event_time';
+COMMENT ON INDEX idx_history_host_service_id IS 'Host/service history detail filter';
+
+CREATE TABLE sla_history_state (
+  id bytea20 NOT NULL,
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL,
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  event_time biguint NOT NULL,
+  hard_state tinyuint NOT NULL,
+  previous_hard_state tinyuint NOT NULL,
+
+  CONSTRAINT pk_sla_history_state PRIMARY KEY (id)
+);
+
+ALTER TABLE sla_history_state ALTER COLUMN id SET STORAGE PLAIN;
+ALTER TABLE sla_history_state ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_state ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_state ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_state ALTER COLUMN service_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_sla_history_state_event ON sla_history_state(host_id, service_id, event_time);
+CREATE INDEX idx_sla_history_state_env_event_time ON sla_history_state (environment_id, event_time);
+
+COMMENT ON COLUMN sla_history_state.id IS 'state_history.id (may reference already deleted rows)';
+COMMENT ON COLUMN sla_history_state.environment_id IS 'environment.id';
+COMMENT ON COLUMN sla_history_state.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN sla_history_state.host_id IS 'host.id';
+COMMENT ON COLUMN sla_history_state.service_id IS 'service.id';
+COMMENT ON COLUMN sla_history_state.event_time IS 'unix timestamp the event occurred';
+COMMENT ON COLUMN sla_history_state.hard_state IS 'hard state after this event';
+COMMENT ON COLUMN sla_history_state.previous_hard_state IS 'hard state before this event';
+
+COMMENT ON INDEX idx_sla_history_state_event IS 'Filter for calculating the sla reports';
+COMMENT ON INDEX idx_sla_history_state_env_event_time IS 'Filter for history retention';
+
+CREATE TABLE sla_history_downtime (
+  environment_id bytea20 NOT NULL,
+  endpoint_id bytea20 DEFAULT NULL,
+  object_type checkable_type NOT NULL,
+  host_id bytea20 NOT NULL,
+  service_id bytea20 DEFAULT NULL,
+
+  downtime_id bytea20 NOT NULL,
+  downtime_start biguint NOT NULL,
+  downtime_end biguint NOT NULL,
+
+  CONSTRAINT pk_sla_history_downtime PRIMARY KEY (downtime_id)
+);
+
+ALTER TABLE sla_history_downtime ALTER COLUMN environment_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_downtime ALTER COLUMN endpoint_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_downtime ALTER COLUMN host_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_downtime ALTER COLUMN service_id SET STORAGE PLAIN;
+ALTER TABLE sla_history_downtime ALTER COLUMN downtime_id SET STORAGE PLAIN;
+
+CREATE INDEX idx_sla_history_downtime_event ON sla_history_downtime(host_id, service_id, downtime_start, downtime_end);
+CREATE INDEX idx_sla_history_downtime_env_downtime_end ON sla_history_downtime (environment_id, downtime_end);
+
+COMMENT ON INDEX idx_sla_history_downtime_event IS 'Filter for calculating the sla reports';
+COMMENT ON INDEX idx_sla_history_downtime_env_downtime_end IS 'Filter for sla history retention';
+
+COMMENT ON COLUMN sla_history_downtime.environment_id IS 'environment.id';
+COMMENT ON COLUMN sla_history_downtime.endpoint_id IS 'endpoint.id';
+COMMENT ON COLUMN sla_history_downtime.host_id IS 'host.id';
+COMMENT ON COLUMN sla_history_downtime.service_id IS 'service.id';
+COMMENT ON COLUMN sla_history_downtime.downtime_id IS 'downtime.id (may reference already deleted rows)';
+COMMENT ON COLUMN sla_history_downtime.downtime_start IS 'start time of the downtime';
+COMMENT ON COLUMN sla_history_downtime.downtime_end IS 'end time of the downtime';
+
+CREATE SEQUENCE icingadb_schema_id_seq;
+
+CREATE TABLE icingadb_schema (
+  id uint NOT NULL DEFAULT nextval('icingadb_schema_id_seq'),
+  version smalluint NOT NULL,
+  timestamp biguint NOT NULL,
+
+  CONSTRAINT pk_icingadb_schema PRIMARY KEY (id)
+);
+
+ALTER SEQUENCE icingadb_schema_id_seq OWNED BY icingadb_schema.id;
+
+INSERT INTO icingadb_schema (version, timestamp)
+  VALUES (2, extract(epoch from now()) * 1000);
diff --git a/schema/pgsql/upgrades/1.1.1.sql b/schema/pgsql/upgrades/1.1.1.sql
new file mode 100644
index 0000000..ed12ed7
--- /dev/null
+++ b/schema/pgsql/upgrades/1.1.1.sql
@@ -0,0 +1,30 @@
+ALTER TABLE notification ALTER COLUMN name TYPE varchar(767);
+COMMENT ON COLUMN notification.name IS '255+1+255+1+255, i.e. "host.name!service.name!notification.name"';
+
+ALTER TABLE customvar_flat ALTER COLUMN flatvalue DROP NOT NULL;
+
+CREATE INDEX idx_customvar_flat_flatname_flatvalue ON customvar_flat(flatname, flatvalue);
+COMMENT ON INDEX idx_customvar_flat_flatname_flatvalue IS 'Lists filtered by custom variable';
+
+CREATE INDEX idx_hostgroup_display_name ON hostgroup(display_name);
+CREATE INDEX idx_hostgroup_name_ci ON hostgroup(name_ci);
+COMMENT ON INDEX idx_hostgroup_display_name IS 'Hostgroup list filtered/ordered by display_name';
+COMMENT ON INDEX idx_hostgroup_name_ci IS 'Hostgroup list filtered using quick search';
+COMMENT ON INDEX idx_hostgroup_name IS 'Host/service/host group list filtered by host group name; Hostgroup detail filter';
+
+CREATE INDEX idx_servicegroup_display_name ON servicegroup(display_name);
+CREATE INDEX idx_servicegroup_name_ci ON servicegroup(name_ci);
+COMMENT ON INDEX idx_servicegroup_display_name IS 'Servicegroup list filtered/ordered by display_name';
+COMMENT ON INDEX idx_servicegroup_name_ci IS 'Servicegroup list filtered using quick search';
+COMMENT ON INDEX idx_servicegroup_name IS 'Host/service/service group list filtered by service group name; Servicegroup detail filter';
+
+ALTER TYPE history_type RENAME TO history_type_old;
+CREATE TYPE history_type AS ENUM ( 'state_change', 'ack_clear', 'downtime_end', 'flapping_end', 'comment_remove', 'comment_add', 'flapping_start', 'downtime_start', 'ack_set', 'notification' );
+ALTER TABLE history
+  ALTER COLUMN event_type DROP DEFAULT,
+  ALTER COLUMN event_type TYPE history_type USING event_type::text::history_type,
+  ALTER COLUMN event_type SET DEFAULT 'state_change'::history_type;
+DROP TYPE history_type_old;
+
+INSERT INTO icingadb_schema (version, timestamp)
+  VALUES (2, extract(epoch from now()) * 1000);