Fuzzy Database Query Languages and Their Relational Completeness Theorem
نویسنده
چکیده
Two fuzzy database query languages are proposed. They are used to query to fuzzy databases that are enhanced from relational databases in a way that fuzzy sets are allowed in both attribute values and truth values. A fuzzy calculus query language is constructed based on the relational calculus and a fuzzy algebra query language is also constructed based on the relational algebra. In addition, this paper proves a fuzzy relational completeness theorem such that both the languages have equivalent expressive power to each other.
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ورودعنوان ژورنال:
- IEEE Trans. Knowl. Data Eng.
دوره 5 شماره
صفحات -
تاریخ انتشار 1993