Candidate-key

Question 2

Given the STUDENTS relation as shown below.

For (StudentName, StudentAge) to be the key for this instance, the value X should not be equal to

Question 2 Explanation:

There is already one entry with StudentName as “Shankar” and Age as 19. So, X value should not be 19.

Correct Answer: A

Question 2 Explanation:

There is already one entry with StudentName as “Shankar” and Age as 19. So, X value should not be 19.