发明申请
US20080016122A1 Techniques of XML query optimization over static heterogeneous XML containers
有权
关于静态异构XML容器的XML查询优化技术
- 专利标题： Techniques of XML query optimization over static heterogeneous XML containers
- 专利标题（中）： 关于静态异构XML容器的XML查询优化技术
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申请号： US11486794申请日： 2006-07-13
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公开(公告)号： US20080016122A1公开(公告)日： 2008-01-17
- 发明人: Zhen Hua Liu , Muralidhar Krishnaprasad
- 申请人： Zhen Hua Liu , Muralidhar Krishnaprasad
- 主分类号： G06F17/30
- IPC分类号： G06F17/30
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.