基于XML异构数据库查询与更新系统研究

Study of XML-based Heterogeneous Database Query and Update System

根据XML的特点,结合企业异构数据源集成的需求,提出了一个基于XML的异构数据源集成中间件的设计,有效弥补当前一些集成系统没有实现更新,或者没能较好地应用到实际中的不足。该系统将UXQuery查询表示为系统的内部表示形式查询树,依据查询树产生XQuery查询以及数据库表,提取器形成一些数据,为分析器所使用,外部XQuery分析器产生XML视图实例,为用户使用提供方便。

According to the characteristics of XML,combined with enterprise integration of heterogeneous data sources needs,on this basis proposes a XML-based integration of heterogeneous data source middleware design,the effective number of integrated systems to make up for not achieving the current update,or not can be well applied to the practice.The system will UXQuery inquiry said the system＇s internal representation of the query tree,query tree generated based on XQuery queries and database tables,extractor forming some data for the analyzer used by the external XQuery parser produces XML view instance,to provide for the user to use convenience.