机构地区: 东莞理工学院城市学院
出 处: 《微计算机应用》 2009年第12期46-49,共4页
摘 要: 支持正则路径表达式的查询技术,被认为是半结构化数据模式下的XML查询研究领域中一种颇具有研究价值的XML查询计算方法。基于视图的查询重写技术充分利用视图中的信息来对查询进行优化,提高查询效率。本文讨论了对于支持正则路径表达式的XML查询如何进行重写的问题以及对不同技术的分析。 The query technology supporting regular path expression is considered much value in a quite area of research studies of the XML query method in semi - structured data model of XML queries. View - based query rewriting techniques take full advantage of the information in view to optimize the query to improve the query efficiency. This article discusses and analysis XML query rewriting question which support for the path expression.