Given relations R(w,x) and S(y,z), the result of SELECT DISTINCT w, x FROM R,…

ISRO Scientist/Engineer SC · 2018 · Computer Science

SELECT DISTINCT w, x
FROM R, S

1. A.

   R has no duplicates and S is non-empty

2. B.

   R and S have no duplicates

3. C.

   S has no duplicates and R is non-empty

4. D.

   R and S have the same number of tuples

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