What is a primary key? a field that uniquely identifies a record in a table a field that uniquely identifies a table the first security key entered by a database user the first security key entered by a database administrator

A primary key, in the world of databases, is a field that uniquely identifies a record in a table. It utilizes keys to compare, classify and keep records at to create a link between those records.

Examples of these driver license number, telephone number with area code, or vehicle identification number (VIN).