A methodology for coupling fragments of XPath with structural indexes for XML documents

  • Authors:
  • George H. L. Fletcher;Dirk Van Gucht;Yuqing Wu;Marc Gyssens;Sofía Brenes;Jan Paredaens

  • Affiliations:
  • Washington State University, Vancouver, WA, USA;Indiana University, Bloomington, IN, USA;Indiana University, Bloomington, IN, USA;Hasselt University & Transnational University of Limburg, Diepenbeek, Belgium;Indiana University, Bloomington, IN, USA;University of Antwerp, Antwerp, Belgium

  • Venue:
  • Information Systems
  • Year:
  • 2009

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Abstract

We introduce a new methodology for coupling language-induced partitions and index-induced partitions on XML documents that is aimed for the benefit of efficient evaluation of XPath queries. In particular, we identify XPath fragments which are ideally coupled with the newly introduced P(k)-partition which has its definition grounded in the well-known A(k) structural index and its associated partition. We then utilize these couplings to investigate fundamental questions about the use of structural indexes in XPath query evaluation.