Q. 24 Let R and S be relation schemes such that R = {a,b,c} and S = {c}. Now consider
the following queries on the database :
IV) SELECT R.a, R.b
FROM R,S
WHERE R.c=S.c
Which of the above queries are equivalent?
(A) I and II
(B) I and III
(C) II and IV
(C) III and IV
Answer: (A)
Explanation:
