Q. 31 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: (B)
Explanation:
Q. 31 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: (B)
Explanation:
