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A fuzzy representation of data for relational databases

1982; Elsevier BV; Volume: 7; Issue: 3 Linguagem: Inglês

10.1016/0165-0114(82)90052-5

1872-6801

Bill P. Buckles, Frederick E. Petry,

Semantic Web and Ontologies

A structure for representing inexact information in the form of a relational database is presented. The structure differs from ordinary relational databases in two important respects: Components of tuples need not be single values and a similarity relation is required for each domain set of the database. Two critical properties possessed by ordinary relational databases are proven to exist in the fuzzy relational structure. These properties are (1) no two tuples have identical interpretations, and (2) each relational operation has a unique result.