Translate to Tamil

Earn Money


Best Offers

Amazon Best Offers

Offers

Best Online Offers

Amazon Offers

Earn Money Short URL

Thursday, 6 January 2011

What is UNIQUE KEY constraint?

A UNIQUE constraint enforces the uniqueness of the values in a set of columns, so no duplicate values are entered. The unique key constraints are used to enforce entity integrity as the primary key constraints.

 Share This Post


No comments:
Write comments

Contact Form

Name

Email *

Message *

Infolinks

© 2014