What is UNIQUE KEY constraint

 Posted by Karthikanbarasan on 1/8/2011 | Category: Sql Server Interview questions | Views: 4037 | Points: 40

? It 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.

Asked In: Many Interviews | Alert Moderator 

Comments or Responses

Login to post response