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Recommending XMLTable Views for XQuery Workloads

  • Iman Elghandour
  • Ashraf Aboulnaga
  • Daniel C. Zilio
  • Calisto Zuzarte
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5679)

Abstract

Physical structures, for example indexes and materialized views, can improve query execution performance by orders of magnitude. Hence, it is important to choose the right configuration of these physical structures for a given database. In this paper, we discuss the types of materialized views that are suitable for an XML database. We then focus on XMLTable materialized views and present a procedure to recommend them given an XML database and a workload of XQuery queries. We have implemented our XMLTable View Advisor in a prototype version based on IBM® DB2® V9.7, which supports both relational and XML data, and we experimentally demonstrate the effectiveness of our advisor’s recommendations.

Keywords

Query Optimizer Path Expression XPath Expression Candidate View XQuery Query 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Iman Elghandour
    • 1
  • Ashraf Aboulnaga
    • 1
  • Daniel C. Zilio
    • 2
  • Calisto Zuzarte
    • 2
  1. 1.University of WaterlooCanada
  2. 2.IBM Toronto LabCanada

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