What is a primary key?

Answer by  dan1658 (185)

A primary key should be used for every table in a database. It is a field that is different for every record stored in a database table. Many database programs, Access for example can create a primary key for you. A primary key should be unique for each record, be indexed, and be the primary way to identify a record.

Answer by  georgie3 (85)

This is initialization number or product code that is issued with your software and is used on your main computer.