#test_ace
Find the FD for relation schema R(A,B,C,D) with pimary key AB under which R is in 2nf but not in 3nf A) AB->CD, A->C, C->D B) AB->CD, B->C, C->B, A->D C) AB->CD, C->D, DB->AC D) AB->CD, BC->D
Find the FD for relation schema R(A,B,C,D) with pimary key AB under which R is in 2nf but not in 3nfA) AB->CD, A->C, C->DB) AB->CD, B->C, C->B, A->DC) AB->CD, C->D, DB->...