发明申请
US20100185683A1 Indexing Strategy With Improved DML Performance and Space Usage for Node-Aware Full-Text Search Over XML
有权
具有改进的DML性能的索引策略和用于节点感知的XML文档的全文搜索的空间使用
- 专利标题: Indexing Strategy With Improved DML Performance and Space Usage for Node-Aware Full-Text Search Over XML
- 专利标题(中): 具有改进的DML性能的索引策略和用于节点感知的XML文档的全文搜索的空间使用
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申请号: US12346393申请日: 2008-12-30
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公开(公告)号: US20100185683A1公开(公告)日: 2010-07-22
- 发明人: Thomas Baby , Zhen Hua Liu , Wesley Lin
- 申请人: Thomas Baby , Zhen Hua Liu , Wesley Lin
- 主分类号: G06F7/06
- IPC分类号: G06F7/06 ; G06F17/30
摘要:
Techniques are provided for searching within a collection of XML documents. A relational table stores an entry for each node of a set of nodes in a collection of XML documents. Each entry of the relational table stores an order key and a path identifier along with the atomized value of the node. Instead of storing the atomized value in a full-text index, a virtual column can be created to represent, for each node, the atomized value of the node. Alternately, each entry of the relational table stores an order key and a path identifier along with, for simple nodes, the atomized value, and for complex nodes, a null value. For a complex node with a descendant text node, a separate entry is stored for the descendant text node in the relational table.
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