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GATE | GATE CS Mock 2018 | Question 15

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Which of the following FD can’t be implied from FD set: {A->B, A->BC, C->D} ?

(A) A->C
(B) B->D
(C) BC->D
(D) All of the above


Answer: (B)

Explanation: A->C can be implied by A->BC and BC->D can be implied by C->D. But we can not get B->D sing given functional dependencies.

Option (B) is correct.

Quiz of this Question


Last Updated : 03 Jan, 2018
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