Technique to estimate the cost of streaming evaluation of XPaths
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United States of America Patent
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Sep 14, 2010
Grant Date -
Apr 17, 2008
app pub date -
Mar 8, 2007
filing date -
Oct 16, 2006
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Abstract
A method and apparatus for estimating the cost of streaming evaluation of XPaths is provided. Aggregate statistics are maintained by the database server upon initiation of a database function by the database administrator about the nodes of the XML document. Based upon these statistics and the complexity of the particular XPath query, an estimate of the cost of the query, in time and computing resources required, is computed.
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