0 votes 0 votes R natural join S means the common column should match right.How it will be B? Niharika 1 asked Nov 20, 2017 Niharika 1 190 views answer comment Share Follow See 1 comment See all 1 1 comment reply joshi_nitish commented Nov 20, 2017 reply Follow Share option B is correct, consider below scenario R A B 1 1 2 1 3 1 4 1 S B C 1 1 1 2 1 3 1 4 this instance will give maximum of r*s = 4*4 = 16 minimum tupples case is very trivial for natural join, it will be 0, when R.B ∩ S.B = phi. 0 votes 0 votes Please log in or register to add a comment.