Accelerating XPath location steps

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Accelerating XPath location steps

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International Conference on Management of Data archive
Proceedings of the 2002 ACM SIGMOD international conference on Management of data table of contents

Madison, Wisconsin

SESSION: Research sessions: path indexing table of contents

Pages: 109 - 120

Year of Publication: 2002

ISBN:1-58113-497-5

Author

Torsten Grust

University of Konstanz, D-78457 Konstanz, Germany

Sponsor

SIGMOD: ACM Special Interest Group on Management of Data

Publisher

ACM New York, NY, USA

Bibliometrics

Downloads (6 Weeks): 5, Downloads (12 Months): 129, Citation Count: 70

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ABSTRACT

This work is a proposal for a database index structure that has been specifically designed to support the evaluation of XPath queries. As such, the index is capable to support all XPath axes (including ancestor, following, preceding-sibling, descendant-or-self, etc.). This feature lets the index stand out among related work on XML indexing structures which had a focus on regular path expressions (which correspond to the XPath axes children and descendant-or-self plus name tests). Its ability to start traversals from arbitrary context nodes in an XML document additionally enables the index to support the evaluation of path traversals embedded in XQuery expressions. Despite its flexibility, the new index can be implemented and queried using purely relational techniques, but it performs especially well if the underlying database host provides support for R-trees. A performance assessment which shows quite promising results completes this proposal.

REFERENCES

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