Knowledge Management in Fuzzy Databases pp 171-190

Part of the Studies in Fuzziness and Soft Computing book series (STUDFUZZ, volume 39) | Cite as

SQLf Query Functionality on Top of a Regular Relational Database Management System

  • Patrick Bosc
  • Olivier Pivert

Abstract

This paper is mainly concerned with the extension of database management systems querying capabilities, so that users may address queries involving preferences and get discriminated answers. The use of flexible (gradual) predicates interpreted in the framework of the fuzzy set theory is advocated for defining a query language, called SQLf. This language enlarges the functionalities offered by SQL and it is considered here from a query processing point of view.

Keywords

Database Query Language Fuzzy Queries SQLf Query Evaluation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Patrick Bosc
    • 1
  • Olivier Pivert
    • 1
  1. 1.Technopole AnticipaIRISA/ENSSATLannion CedexFrance

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