40 Bibliográfia Celko, Joe; SQL felsőfokon, Kiskapu, Budapest, 2002, xxiii, 19-21 oldal http://en.wikipedia.org/wiki/Codd s_12_rule shttp://en.wikipedia.org/wiki/Codd s_12_rule s http://dev.mysql.com/doc/refman/5.1/en/sto red-programs-views.htmlhttp://dev.mysql.com/doc/refman/5.1/en/sto red-programs-views.html
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