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Techniques of XML query optimization over static heterogeneous XML containers
Techniques of XML query optimization over static heterogeneous XML containers
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机译:静态异构XML容器上的XML查询优化技术
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摘要
A method and apparatus for optimizing XML queries over heterogeneous XML tables is provided. A query that targets a container (e.g. table or collection) that contains a plurality of XML documents is received, wherein at least two XML documents in the plurality do not conform to the same schema. Based on the received query, a plurality of execution plans is generated. Each execution plan is associated with a different XML schema. An execution plan is used to execute the query relative to those XML documents that conform to the XML schema associated with the execution plan.
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