1. Minimal Superkeys is called

A) Domain keys

B) Attribute keys

C) Candidate keys

D) Schema keys

Correct Answer: Candidate keys

Explanation : Minimal Superkeys is called Candidate keys.

2. The database schema is written in Data Control Language.

A) True

B) False

Correct Answer: False

Explanation : The database schema or database structure is written in Data Definition Language(DDL).

3. Which one of the following attributes can be taken as a primary key?

A) Department

B) Street

C) Name

D) Id

Correct Answer: Id