Example R=(A,B,C,G,H,I) D=(A B .> HI CG 份 Some members of D+: A CGHI. Since A B,the complementation rule(4)implies that A、R2B-A. Since R-B-A=CGHI,so A CGHI. A Hl. Since A、B and B H,the multivalued transitivity rule(6)implies that B HI-B. Since HI-B=HI,A HI. Database System Concepts,5th Ed. c.5 ©Silberschat乜，Korth and SudarshanDatabase System Concepts, 5 C.5 ©Silberschatz, Korth and Sudarshan th Ed. Example R = (A, B, C, G, H, I) D = {A B B HI CG H} Some members of D+: A CGHI. Since A B, the complementation rule (4) implies that A R – B – A. Since R – B – A = CGHI, so A CGHI. A HI. Since A B and B HI, the multivalued transitivity rule (6) implies that B HI – B. Since HI – B = HI, A HI