class DB_EXEC_USE Ancestors HANDLE_USE Descendants DATABASE_CHANGE [G -> DATABASE create default_create end] DATABASE_SELECTION [G -> DATABASE create default_create end] DATABASE_STORE [reference G -> DATABASE create default_create end] DB_CHANGE DB_CONTROL DB_PROC DB_REPOSITORY DB_SELECTION DB_STORE Clients DB_EXEC_USE Suppliers BOOLEAN DB_EXEC DB_EXEC_USE HANDLE