White Papers

SIGOPT: Using Schema to Optimize XML Query Processing

Category: Data Management, Software and Web Development

Overview There has been a great deal of work in past years on processing and optimizing queries against XML data. Typically in these previous works, schema information is not considered, so that evaluation techniques can continue to be used even in the absence of one. However, schema information is often available and, in this paper, it is shown that when available it can be exploited to great advantage in ways that complement "Traditional" XML query optimization. To be usable in practice, that aspects of schema is required, essential for the purposes, be captured in a Schema Information Graph (SIG). Such meta-data knowledge is exploited with a preprocessing enumeration phase that detects potentially interchangeable evaluation units - called Alternate Paths.

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Publisher: Institute of Electrical and Electronics Engineers
File Format: PDF
Date Published: Dec 24, 2008
Format: White Papers
Topics: XML, Programming Languages, Database Management

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