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XQuery在XML流上查询的结构化连接 被引量:3

Structural Join in XQuery Processing on XML Stream
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摘要 通过分析XQuery查询与XPath查询的区别与联系,定义了扩展的基本XSIEQ机E-XSIEQ,它是一种被索引化、基于栈的自动机。提出用变量表来收集XPath查询结果,并将这些中间结果组织成原子表集合,结果构造时能够根据原子表元组之间的上下文关系,对原子表集合快速地进行连接。描述了XQuery查询过程中的结构化连接算法,给出了结果构造的时间性能分析。 An extended XML Stream Query with Immediate Evaluation(XSIEQ) machine for XQuery is defined, which is a kind of indexed automata based on stack. Variable table is used to reserve the XPath query results, and these results form into a set of atom tables. The algorithm on structural join is introduced and the result-constructing performance is analyzed.
出处 《计算机工程》 CAS CSCD 北大核心 2008年第4期63-65,70,共4页 Computer Engineering
基金 国家自然科学基金资助项目(60673126) 中国科学院计算机科学重点实验室开放课题基金资助项目(SYSKF0502)
关键词 自动机 分层缓冲区 结构化连接 automata layered buffer structural join
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参考文献3

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共引文献3

同被引文献33

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