ALTER TABLE project_task DROP CONSTRAINT "project_task_group_project_id_f" RESTRICT; DROP TABLE project_category; DROP SEQUENCE project_categor_category_id_seq; DROP VIEW project_task_vw; DROP TABLE project_task_artifact; DROP TABLE project_group_forum; DROP TABLE project_group_doccat; DROP VIEW project_depend_vw; DROP VIEW project_dependon_vw; DROP VIEW project_history_user_vw; DROP VIEW project_message_user_vw; DROP TRIGGER projtask_update_depend_trig ON project_task; DROP TRIGGER projtask_insert_depend_trig ON project_task;