On a preference query language that handles symbolic scores

  • Authors:
  • Olivier Pivert;Grégory Smits

  • Affiliations:
  • Irisa --- University of Rennes 1, Technopole Anticipa, Lannion Cedex, France;Irisa --- University of Rennes 1, Technopole Anticipa, Lannion Cedex, France

  • Venue:
  • ADBIS'12 Proceedings of the 16th East European conference on Advances in Databases and Information Systems
  • Year:
  • 2012

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Abstract

This paper describes a preference query language based on SQL, which captures preferences modeled by means of symbolic scores expressed in a linguistic manner. The high expressivity of this language is emphasized, and it is shown that some connections between the preference criteria considered and Boolean conditions make it possible to take advantage of the optimization mechanisms offered by classical DBMSs when it comes to query processing.