Definition: A database key is a attribute utilized to sort and/or identify data in some manner. Each table has a primary key which uniquely identifies records. Foriegn keys are utilized to cross-reference data between relational tables.
Key
By Mike Chapple, About.com Guide
See More About:
Suggested Reading
Explore Databases
©2012 About.com. All rights reserved.
A part of The New York Times Company.