GATE | GATE-CS-2000 | Question 49

Given relations r(w, x) and s(y, z), the result of

       FROM r, s 

is guaranteed to be same as r, provided

(A) r has no duplicates and s is non-empty
(B) r and s have no duplicates
(C) s has no duplicates and r is non-empty
(D) r and s have the same number of tuples

Answer: (A)

Explanation: See question 3 of

Quiz of this Question

My Personal Notes arrow_drop_up
Article Tags :

Be the First to upvote.

Please write to us at to report any issue with the above content.