Microsoft Exam Questions

What should you recommend creating?

You have a Microsoft SQL Azure database named DBAzure1.
You create a table in DBAzure1 by using the following script:

You need to recommend a solution to ensure that each combination of CustomerContact and CustomerDetails
is not duplicated.
What should you recommend creating?

A.
A CHECK constraint

B.
A filtered index

C.
A columnstore index

D.
A UNIQUE constraint