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Practical indexing XML document for twig query

  • Hongzhi Wang*
  • , Wei Wang
  • , Jianzhong Li
  • , Xuemin Lin
  • , Reymond Wong
  • *Corresponding author for this work
  • University of New South Wales
  • CSIRO
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Answering structural queries of XML with index is an important approach of efficient XML query processing. Among existing structural indexes for XML data, F&B index is the smallest index that can answer all branching queries. However, an F&B index for less regular XML data often contains a large number of index nodes, and hence a large amount of main memory. If the F&B index cannot be accommodated in the available memory, its performance will degrade significantly. This issue has practically limited wider application of the F&B index. In this paper, we propose a disk organization method for the F&B index which shift part of the leave nodes in the F&B index to the disk and organize them judiciously on the disk. Our method is based on the observation that the majority of the nodes in a F&B index is often the leaf nodes, yet their access frequencies are not high. We select some leaves to output to disk. With the support of reasonable storage structure in main memory and in disk, we design efficient query processing method). We further optimize the design of the F&B index based on the query workload. Experimental results verified the effectiveness of our proposed approach.

Original languageEnglish
Title of host publicationAdvances in Computer Science - ASIAN 2005
Subtitle of host publication10th Asian Computing Science Conference, Proceedings
PublisherSpringer Verlag
Pages208-222
Number of pages15
ISBN (Print)3540307672, 9783540307679
DOIs
StatePublished - 2005
Event10th Asian Computing Science Conference, ASIAN 2005 - Kunming, China
Duration: 7 Dec 20059 Dec 2005

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3818 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference10th Asian Computing Science Conference, ASIAN 2005
Country/TerritoryChina
CityKunming
Period7/12/059/12/05

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