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GATE | GATE CS 2008 | Question 68

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1) Let R and S be two relations with the following schema
R (P,Q,R1,R2,R3)
S (P,Q,S1,S2)
Where {P, Q} is the key for both schemas. Which of the following queries are equivalent?

(A) Only I and II
(B) Only I and III
(C) Only I, II and III
(D) Only I, III and IV

Answer: (D)

Explanation: See Question 1 of

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Last Updated : 06 May, 2019
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