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  5. Discovery of hidden data relationships in tasks of information systems reengineering

Discovery of hidden data relationships in tasks of information systems reengineering

V.A. Radchenko, S.S. Tanyansky
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Approach for the discovery of new, not obtained before functional dependencies (FD) is proposed. It is based on the set of data stored in relational database. Methods of intellectual data analysis (Data Mining) are used to obtain set of strict FDs, that satisfy database state on the moment of processing. Also every single FD goes through initial closure membership check to exclude FDs that can be obtained from others with the rules of inference help.
Keywords: reengineering, relational database, functional dependency, discovery of dependencies, universal relation, closure of functional dependencies