Keys relates DBMS Aptitude Questions and Answers

In this section Database Management System (DBMS) keys (Primary Key, Super Key, Candidate Key, Composite Key, and Foreign Key) related Aptitude Questions and Answers for freshers and experienced.

List of all DBMS keys related Aptitude Questions and Answers

1) Which is correct sentence regarding primary key?
  1. It is used to compare more than one record in a table.
  2. It is used to define records uniquely.

2) Can we define more than one primary key?
  1. Yes
  2. No

3) Foreign key is the set of more than one attribute to define record uniquely?
  1. True
  2. False

4) A --- key can be primary key?
Choose the correct term to complete the sentence.
  1. Foreign
  2. Primary
  3. Candidate
  4. Composite

5) Which key is used to make relations between two tables?
  1. Foreign
  2. Primary
  3. Candidate
  4. Composite