A Fuzzy Querying System based on SQLf2 and SQLf3

Leonid Tineo (1), Marlene Goncalves (1), Juan Carlos Eduardo (1)

e-mails: leonid@usb.ve, mgolcalves@usb.ve, jceduardo@hotmail.com

(1) Universidad Simón Bolívar - Departamento de Computación Apartado 89000, 1080-A Caracas Venezuela

Abstract

For improving the expressive power, there have been proposed and developed several extensions of SQL. One of them is SQLf, a fuzzy set based extension that allows the expression of flexible queries involving user preferences. On the other hand, SQL has evolved into: SQL2 that incorporates relational algebra operations constrains and sub-queries; and SQL3 that incorporates features of deductive, active and object oriented databases. In a previous work we have defined SQLf2 and SQLf3 as extensions of SQLf with the fuzzy set based treatment of new features from SQL2 and SQL3. In this paper we present a real fuzzy querying system based on SQLf2-SQLf3 that we have built on top of a RDBMS. This system provides a web based interface and an API.

Keywords:Queries, Fuzzy Queries, Database, Web Interface, SQL


BibTex 

@INPROCEEDINGS{tineo04:276,
                  AUTHOR       = {Leonid Tineo and Marlene Goncalves and Juan Carlos Eduardo},
                  TITLE        = {A Fuzzy Querying System based on SQLf2 and SQLf3},
                  BOOKTITLE    = {30ma Conferencia Latinoamericana de Informática (CLEI2004)},
                  YEAR         = {2004},
                  editor       = {Mauricio Solar and David Fernández-Baca and Ernesto Cuadros-Vargas},
                  pages        = {845--851},
                  address      = {},
                  month        = Sep,
                  organization = {Sociedad Peruana de Computación},
                  note         = {ISBN 9972-9876-2-0},
                  file         = {http://clei2004.spc.org.pe/es/html/pdfs/276.pdf}
}

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