Nielit Scientist-C 2016 march
August 29, 2024Database-Management-System
August 29, 2024Nielit Scientist-C 2016 march
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Question 4
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A functional dependency of the form x → y is trivial if
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y ⊆ x
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y ⊂ x
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x ⊆ y
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x ⊂ y and y ⊂ x
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Question 4 Explanation:
Trivial − If a functional dependency (FD) X → Y holds, where Y is a subset of X, then it is called a trivial FD. Trivial FDs always hold.
Correct Answer: A
Question 4 Explanation:
Trivial − If a functional dependency (FD) X → Y holds, where Y is a subset of X, then it is called a trivial FD. Trivial FDs always hold.