The Implication Problem for Inclusion Dependencies: A Graph Approach.

http://doi.acm.org/10.1145/382274.382402 db/journals/sigmod/MissaouiG90.html Rokia Missaoui Robert Godin The Implication Problem for Inclusion Dependencies: A Graph Approach. 36-40 sigmodR/19-1/P036.pdf 1990 19 SIGMOD Record 1 db/journals/sigmod/sigmod19.html#MissaouiG90