Multiple choice

What will happen if the union of primary keys of the related entity sets?

  1. It becomes super key.

  2. It becomes candidate key.

  3. It becomes foreign key.

  4. It becomes primary key

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 A superkey is a combination of attributes that can be uniquely used to identify a database record. A table might have many superkeys.