Geodesic
Fuzzy Improvement of the SQL
Yugoslav journal of operations research, Tome 21 (2011) no. 2, p. 239 .

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Structured Query Language (SQL) is used to obtain data from relational databases. Fuzzy improvement of SQL queries has advantages in cases when the user cannot unambiguously define selection criteria or when the user wants to examine data that almost meet the given criteria. In this paper we examine a realisation of the fuzzy querying concept. For this purposes the fuzzy generalized logical condition for the WHERE part of the SQL is created. It allows users to create queries by linguistic terms. The proposed model is an extension of the SQL so that no modification inside databases has to be undertaken.
Classification : 94D05, 68P99, 90B99.
Keywords: SQL, fuzzy query, generalized logical condition, database. 
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     title = {Fuzzy {Improvement} of the {SQL}},
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Miroslav Hudec. Fuzzy Improvement of the SQL. Yugoslav journal of operations research, Tome 21 (2011) no. 2, p. 239 . http://geodesic.mathdoc.fr/item/YJOR_2011_21_2_a6/