Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V Y ?

Which of the following is NOT a superkey in a relational schema with a

1.	Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V Y ?
A.	V X Y Z
B.	V W X Z
C.	V W X Y
D.	V W X Y Z
Answer» C. V W X Y

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Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V Y ?

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