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+// Copyright (C) 2015-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef DB_EXCEPTIONS_H
+#define DB_EXCEPTIONS_H
+
+#include <exceptions/exceptions.h>
+
+namespace isc {
+namespace db {
+
+/// @brief Multiple lease records found where one expected
+class MultipleRecords : public Exception {
+public:
+    MultipleRecords(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Data is truncated
+class DataTruncated : public Exception {
+public:
+    DataTruncated(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Database duplicate entry error
+class DuplicateEntry : public Exception {
+public:
+    DuplicateEntry(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Key is NULL but was specified NOT NULL
+class NullKeyError : public Exception {
+public:
+    NullKeyError(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Attempt to modify data in read-only database.
+class ReadOnlyDb : public Exception {
+public:
+    ReadOnlyDb(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Upper bound address is lower than lower bound address while
+/// retrieving a range of leases.
+class InvalidRange : public Exception {
+public:
+    InvalidRange(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Invalid address family used as input to Lease Manager.
+class InvalidAddressFamily : public Exception {
+public:
+    InvalidAddressFamily(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Error detected in the database configuration.
+class DbConfigError : public Exception {
+public:
+    DbConfigError(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Error when specified database could not be found in the server
+/// configuration.
+class NoSuchDatabase :  public Exception {
+public:
+    NoSuchDatabase(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+/// @brief Specification of the database backend to be used yields
+/// multiple results.
+class AmbiguousDatabase :  public Exception {
+public:
+    AmbiguousDatabase(const char* file, size_t line, const char* what) :
+        isc::Exception(file, line, what) {}
+};
+
+}  // namespace isc
+}  // namespace db
+
+#endif