Towards practical meta-querying

  • Authors:
  • Jan Van den Bussche;Stijn Vansummeren;Gottfried Vossen

  • Affiliations:
  • Limburgs Universitair Centrum, Diepenbeek, Belgium;Limburgs Universitair Centrum, Diepenbeek, Belgium and Scientific Research Flanders, Belgium;University of Muenster, Muenster, Germany

  • Venue:
  • Information Systems
  • Year:
  • 2005

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Abstract

We describe a meta-querying system for databases containing queries in addition to ordinary data. In the context of such databases, a meta-query is a query about queries. Representing stored queries in XML, and using the standard XML manipulation language XSLT as a sublanguage, we show that just a few features need to be added to SQL to turn it into a fully-fledged meta-query language. The good news is that these features can be directly supported by extensible database technology.