... $COP 4710: Database Systems (Day 12) Page 1 Mark LlewellynCOP 4710: Database Systems Spring 2004Introduction to Normalization – Part 3BÀI 12, 1/2 ngàyCOP 4710: Database Systems Spring 2004Introduction ... {BC}, C→C is coveredF&G568H9ECOP 4710: Database Systems (Day 12) Page 8 Mark Llewellyn Test for AB→CDE continuesZ = {ABCE} ∪ ((ABCE ∩ CD)+ ... COP 4710: Database Systems (Day 12) Page 16 Mark Llewellyn Let R = (A, B, C, D) F = {A→B, B→C, C→D, D→A}D = {(AB),...