... ISBN_Numberindex in your SQL Server database. However, this would notbe identified as a key of a table. In Chapter 6, we’ll discuss implementing keys, and in Chapter 8, we’ll coverimplementing ... addressee’s name and address and the date the item was sent.Be careful when choosing a natural key. Ideally, you are looking for something that is stable,that you can control, and that is definitely ... the value and see that in fact this product wasbuilt in a lot that contained defective whatchamajiggers, and he needs to replace it. The essentialthing for us during the logical design phase...