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Efficient indexing and querying of XML data using modified Prüfer sequences

Published: 31 October 2005 Publication History

Abstract

With the advent of XML as the new standard for information representation and exchange, indexing and querying of XML data is of major concern. In this paper, we propose a method for representing an XML document as a sequence based on a variation of Prüfer sequences. We incorporate new components in the node encodings such as level, number of a certain kind of descendants and develop methods for holistic processing of tree pattern queries. The query processing involves converting the query also into a sequence and performing subsequence matching on the document sequence. We establish certain interesting properties of the proposed method of sequencing that give rise to a new efficient pattern matching algorithm. The sequence data is stored in a two level B+-trees to support query processing. We also propose an optimization for parent-child axis to speed up the query processing. Our approach does not require any post-processing and guarantees results that are free of false positives and duplicates. Experimental results show that our system performs significantly better than previous systems in a large number of cases.

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cover image ACM Conferences
CIKM '05: Proceedings of the 14th ACM international conference on Information and knowledge management
October 2005
854 pages
ISBN:1595931406
DOI:10.1145/1099554
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 31 October 2005

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Author Tags

  1. XML
  2. indexing
  3. modified Prüfer sequences
  4. query processing
  5. tree pattern queries

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CIKM05
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CIKM05: Conference on Information and Knowledge Management
October 31 - November 5, 2005
Bremen, Germany

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CIKM '05 Paper Acceptance Rate 77 of 425 submissions, 18%;
Overall Acceptance Rate 1,861 of 8,427 submissions, 22%

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  • (2019)Effective pruning for XML structural match queriesData & Knowledge Engineering10.1016/j.datak.2010.02.00469:6(640-659)Online publication date: 1-Jan-2019
  • (2012)Examining the impact of data-access cost on XML twig pattern matchingInformation Sciences10.1016/j.ins.2012.03.011203(24-43)Online publication date: Oct-2012
  • (2010)Key Concepts for Native XML ProcessingFrom Active Data Management to Event-Based Systems and More10.1007/978-3-642-17226-7_1(1-19)Online publication date: 2010
  • (2008)RRSi: indexing XML data for proximity twig queriesKnowledge and Information Systems10.1007/s10115-008-0122-x17:2(193-216)Online publication date: 9-Apr-2008
  • (2007)LCS-TRIMProceedings of the 33rd international conference on Very large data bases10.5555/1325851.1325863(63-74)Online publication date: 23-Sep-2007

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