1) Let R and S be two relations with the following schema R (P,Q,R1,R2,R3) S…
GATE · 2008 · CS
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
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