0 votes 0 votes Consider the relation R(A,B,C,D,E) with the following depencies ABC - DE and D-AB The number of super key of R is Pun M asked Jun 12, 2017 Pun M 389 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes CD and ABC is the key here So, Number of Super keys will be 2^(n-2) + 2^(n-3) - 2^(n-4) which comes out to be 10 Correct me if Wrong bad_engineer answered Jun 12, 2017 bad_engineer comment Share Follow See all 3 Comments See all 3 3 Comments reply Pun M commented Jun 12, 2017 reply Follow Share I am able to find 7 please correct me if i am wrong 0 votes 0 votes Pinaki Dash commented Jun 12, 2017 reply Follow Share No, the answer is 10. 0 votes 0 votes Pinaki Dash commented Jun 12, 2017 reply Follow Share All the superkeys are CD,ABC, ACD, BCD, CDE, BCDE, ACDE, ABCD, ABCE, ABCDE 0 votes 0 votes Please log in or register to add a comment.