| 基于XQuery查询优化的研究 |
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| 引用本文： | 施振佺,曹渠江.基于XQuery查询优化的研究[J].计算机应用与软件,2008,25(11). |
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| 作者姓名： | 施振佺 曹渠江 |
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| 作者单位： | 1. 上海理工大学计算机工程学院,上海,200093;南通大学,江苏,南通,226007
2. 上海理工大学计算机工程学院,上海,200093 |
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| 基金项目： | 江苏省高校自然科学基金项目 |
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| 摘 要： | XML已经成为网络上信息描述和信息交换的标准,随着XML应用得越来越广泛,人们提出了多种XML 数据的查询方法.但是,很多查询方法都有各自的局限性.利用有意义的最小公共实体结构EntityInMLCAS(Entity In Meaning Lowest Common Ancestor Structure)原理,提出一种优化查询方法.同时采用堆栈技术的方法对XML文档结点树进行自顶向下的遍历,该方法大大提高了优化查询的速度.
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| 关 键 词： | 结构化查询 |
ON QUERY OPTIMIZATION BASED ON XQUERY |
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| Shi Zhenquan,Cao Qujiang.ON QUERY OPTIMIZATION BASED ON XQUERY[J].Computer Applications and Software,2008,25(11). |
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| Authors: | Shi Zhenquan Cao Qujiang |
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| Affiliation: | Shi Zhenquan~(1,2) Cao Qujiang~1 1 (College of Computer Science,Shanghai University of Science , Technology,Shanghai 200093,China) 2 (Nantong University,Nantong 226007,Jiangsu,China) |
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| Abstract: | XML has become the de facto standard for data representation and exchange on the World-Wide Web.There are increasing ap- plications of XML with various kinds of XML data query way.But many query methods have the limitation of their own.In this paper,we de- veloped a query optimization method based on the principle of Entity in Meaning Lowest Common Ancestor Structure(abbreviated as Entity- InMLCAS).This method shortens the optimized query time significantly by adopting simultaneously stack technique to trav... |
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| Keywords: | XML XQuery EntityInMLCAS |
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