【摘要】 异构数据集成系统的目的是提供一个访问异构数据源的统一接口。本文结合当前企业信息集成技术,提出了一种统一的异构数据源集成模型——基于XML的虚拟数据库模型。继而剖析了该模型的层次结构、模式集成、异构数据集成视图定义。并给出了具体应用实例。该模型很好地解决了异构数据源集成方面存在的一系列问题。更多还原

【Abstract】 The purpose of data integration is providing a standard interface for visiting heterogeneous data sources.Combined with enterprise information integration technology. this article advanced a standard integration of heterogeneous data sources that called virtual database model based on XML.In-depth analysis of the model of hierarchical structure, model integration, heterogeneous data inte-gration view definition. At last ,gives a example of specific applications of the virtual database model based on XML. The model have solved the problems of heterogeneous data integration.更多还原