Extending XQuery with window functions

  • Botan I
  • Kossmann D
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This paper presents two extensions for XQuery. The first extension allows the definition and processing of different kinds of windows over an input sequence; i.e., tumbling, sliding, and landmark windows. The second extension extends the XQuery data model (XDM) to support infinite sequences. This extension makes it possible to use XQuery as a language for continuous queries. Both extensions have been integrated into a Java-based open source XQuery engine. This paper gives details of this implementation and presents the results of running the Linear Road benchmark on the extended XQuery engine.

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  • ISBN: 9781595936493
  • SCOPUS: 2-s2.0-85011076371
  • PUI: 614283590
  • SGR: 85011076371


  • Irina Botan

  • Donald Kossmann

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