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GATE | GATE-CS-2014-(Set-2) | Question 32

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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

(A)

18

(B)

19

(C)

17

(D)

20



Answer: (B)

Explanation:

There is already an entry with same name and age as 19. So the age of this entry must be something other than 19.


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Last Updated : 28 Jun, 2021
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