摘要
XQucry查询语言使用XML作为抽象数据模型。可以对基于XML的数据源作查询，无论这些数据源是真正的XML文件或者是中间件提供的XML视图。本文研究了以XQuery作为查询语言的数据集成系统中的查询分解算法。在XQucry语言的层次，利用它的语言特点实现了多数据源的查询分解算法。
XQuery uses XML as its abstract data model, which can express queries across all kinds of XML data, whether physically stored in XML or viewed as XML via middleware. This paper provides a query decomposition algorithm for a data integration system based on XQuery. This algorithm is implemented at the level of XQuery language, which utilizes features provided by XQuery.
出处
《通讯和计算机（中英文版）》
2005年第6期24-30,共7页
Journal of Communication and Computer
基金
本研究得到北京市自然科学基金（4052006）的资助.
