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Data dependencies in extended possibility-based fuzzy relational databases

โœ Scribed by Z. M. Ma; W. J. Zhang; W. Y. Ma; F. Mili

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
98 KB
Volume
17
Category
Article
ISSN
0884-8173

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โœฆ Synopsis

Based on the semantic equivalence degree the formal definitions of fuzzy functional dependencies (FFDs) and fuzzy multivalued dependencies (FMVDs) are first introduced to the fuzzy relational databases, where fuzziness of data appears in attribute values in the form of possibility attributions, as well as resemblance relations in attribute domain elements, called extended possibility-based fuzzy relational databases. A set of inference rules for FFDs and FMVDs is then proposed. It is shown that FFDs and FMVDs are consistent and the inference rules are sound and complete, just as Armstrong's axioms for classic cases.

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