Abstract

In this paper the relational model with fuzzy attribute values is discussed. Based on the concepts of the semantic distance, the definitions of the fuzzy relational operations and the fuzzy functional dependency are given. Making use of fuzzy functional dependencies, we can compress the domain of the fuzzy data and make the fuzzy data ‘clearer’. Furthermore, an algorithm for testing the satisfiability of a fuzzy instance to the set of fuzzy functional dependencies is given.

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