Fuzzy querying with the use of interval-valued fuzzy sets

• Autorzy: Myszkorowski K. , Superson I.
• Języki publikacji: EN

Abstrakty

EN

The paper deals with flexible queries in relational databases. Conditions included in queries are modeled with the use of interval-valued fuzzy sets. Each value returned by a query is associated with a subinterval of [0,1] which expresses a membership degree. The bounds of membership intervals have been determined for different operations of relational algebra and different SQL operators.

Słowa kluczowe

EN

fuzzy sets; databases; relational algebra; query languages

PL

zbiory rozmyte; bazy danych; algebra relacyjna; język zapytań

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Journal of Applied Computer Science
• Rocznik: 2013
• Tom: Vol. 21, nr 1
• Strony: 89--105
• Opis fizyczny: Bibliogr. 20 poz.

Twórcy

autor

Myszkorowski K.

• Technical University of Łódź, Institute of Information Technology, Wólczańska 215, 90-924 Łódź

autor

Superson I.

• Technical University of Łódź, Institute of Information Technology, Wólczańska 215, 90-924 Łódź

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