Fuzzy Functional Dependencies in Multiargument Relationships

Autor:	Krzysztof Myszkorowski
Rok vydání:	2010
Předmět:	Dependency theory (database theory) Fuzzy classification Fuzzy functional dependency Data integrity Fuzzy number Data mining Notation Functional dependency computer.software_genre computer Superkey Mathematics
Zdroj:	Artificial Intelligence and Soft Computing ISBN: 9783642132070 ICAISC (1)
DOI:	10.1007/978-3-642-13208-7_20
Popis:	A multiargument relationship may be formally presented using the relational notation: R(X1, X2, ..., Xn), where R is the name of the relationship, and attributes Xi denote keys of entity sets which participate in it. The dependencies between all n attributes describe the integrity constraints and must not be infringed. They constitute a restriction for relationships of fewer attributes. In the paper an analysis of fuzzy functional dependencies between attributes of R is presented. Attribute vales are given by means of possibility distributions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea0f84d1a750b80b18f08c1da6de394e https://doi.org/10.1007/978-3-642-13208-7_20 Zobrazit plný text záznamu