I'm working on a sales and inventory database for a small business, and have tblProducts, tblCustomers, tblOrders, and tblOrderDetails connected and functional with production of sales reports and invoice forms. My boss would like to incorporate the ability to create orders for ad hoc products or services, and "on-the-fly" good customer discounts into this Access 2013 database. Not sure if I need additional tables, or to eliminate the referential integrity on the existing tables. Any advice appreciated!