计算机科学与应用  >> Vol. 1 No. 3 (December 2011)

基于节点集的XML查询技术研究
XML Query Technology Research Based on Node-Set

DOI: 10.12677/csa.2011.13029, PDF, HTML, 下载: 2,718  浏览: 6,318 

作者: 牛连强, 董世超, 张胜男

关键词: XML路径查询结构连接XML查询模式
XML Path Query; Structural Join; XML Query Pattern

摘要: 复杂路径表达式查询是XML查询的核心研究内容。针对长路径表达式,尤其是在查询中间结果较多,节点索引的连接操作代价较大的情况下,提出了一种基于节点集的索引方式。该方式支持节点集间的投影操作、选择操作以及高效的结构连接,从而实现数据的快速查询并形成基于节点集的XML查询模式。同时该模式为XML基于路径的查询处理提供了更多的选择。
Abstract: XML query languages take complex path expressions as their core. According to the long path ex- pression, especially Production of a large amount of intermediate results; the larger price can be spent on joining operation of indexical nodes. This paper put forward a model which supports projection operation; choose operation and high efficient structure connection in node set. Meanwhile, this model provides path query processing with more choices.

文章引用: 牛连强, 董世超, 张胜男. 基于节点集的XML查询技术研究[J]. 计算机科学与应用, 2011, 1(3): 149-153. http://dx.doi.org/10.12677/csa.2011.13029

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