DROP TABLE persons;
DROP TABLE institutes;
DROP TABLE documents;
DROP TABLE authors_docs;
DROP TABLE phones;
DROP SEQUENCE person_ids;
DROP SEQUENCE institute_ids;
DROP SEQUENCE document_ids;
DROP SEQUENCE phone_ids;
DROP PROCEDURE create_person;
DROP PROCEDURE delete_person;
DROP PROCEDURE add_phone;
DROP PROCEDURE delete_phone;
DROP PROCEDURE set_person_name;
DROP PROCEDURE set_org_name;
DROP PROCEDURE set_doc_title;
DROP PROCEDURE set_doc_abstract;
DROP PROCEDURE create_document;
DROP PROCEDURE create_org;
DROP PROCEDURE delete_document;
DROP PROCEDURE delete_org;
DROP PROCEDURE make_doc_link;
DROP PROCEDURE del_doc_link;
DROP PROCEDURE make_author_link;
DROP PROCEDURE del_author_link;