DROP TRIGGER k_tr_upd_course_booking ON k_x_course_bookings;
DROP TRIGGER k_tr_ins_course_booking ON k_x_course_bookings;
DROP FUNCTION k_fn_ins_course_booking ();
DROP FUNCTION k_fn_upd_course_booking ();
DROP FUNCTION k_sp_del_subject (CHAR);
DROP FUNCTION k_sp_del_acourse (CHAR);
DROP FUNCTION k_sp_del_course (CHAR);
