-- Place your SQL code here

ALTER TABLE vn.itemShelvingSaleReserve DROP FOREIGN KEY IF EXISTS  itemShelvingSaleReserve_sector_FK;

ALTER TABLE vn.itemShelvingSaleReserve ADD CONSTRAINT  itemShelvingSaleReserve_sector_FK 
	FOREIGN KEY IF NOT EXISTS (sectorFk) REFERENCES vn.sector(id) ON DELETE RESTRICT ON UPDATE CASCADE;