DTD inference for views of XML data
PODS '00 Proceedings of the nineteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Towards an Exhaustive Set of Rewriting Rules for XQuery Optimization: BizQuery Experience
ADBIS '02 Proceedings of the 6th East European Conference on Advances in Databases and Information Systems
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
Tree logical classes for efficient evaluation of XQuery
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Reformulating XPath queries and XSLT queries on XSLT views
Data & Knowledge Engineering
XMark: a benchmark for XML data management
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Shifting Predicates to Inner Sub-expressions for XQuery Optimization
Advanced Internet Based Systems and Applications
Shifting Predicates to Inner Sub-expressions for XQuery Optimization
Advanced Internet Based Systems and Applications
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Besides XPath, XQuery is an XML query language developed by W3C. Within this paper, which is an extended version of [6], we present an approach for the optimization of the execution time of nested XQuery queries based on type information of the input XML document given in XML Schema. The optimization approach deletes unnecessary sub-expressions and shifts predicates to inner sub-expressions wherever possible in order to avoid the generation of unnecessary intermediate data. A performance analysis of our prototype demonstrates the optimization of the execution time of various current XQuery evaluators when using the proposed optimization approach.