Fuzzy functional dependencies in multiargument relationships

Authors:
Krzysztof Myszkorowski
Affiliations:
Institute of Information Technology, Technical University of Łódź, Łódź, Poland
Venue:
ICAISC'10 Proceedings of the 10th international conference on Artificial intelligence and soft computing: Part I
Year:
2010

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Abstract

A multiargument relationship may be formally presented using the relational notation: R(X1, X2, ..., Xn), where R is the name of the relationship, and attributes Xi denote keys of entity sets which participate in it. The dependencies between all n attributes describe the integrity constraints and must not be infringed. They constitute a restriction for relationships of fewer attributes. In the paper an analysis of fuzzy functional dependencies between attributes of R is presented. Attribute vales are given by means of possibility distributions.