企业在发展过程中积累了大量的异构数据源,电子商务要求企业将内部的各种信息系统整合为一个统一的乎台,这一需求的核心是要建立一个异构数据的集成平台,从而通过Web发布商业信息,实现其商业目的。本文针对这一需求,提出用一个基于XML的中间件访问异构数据库,实现异构数据的集成和交换的方法。 Enterprises in the development process accumulated a large number of heterogeneous data sources, e-commerce requires enterprises to integrate various internal information systems into a unified platform, the core of this demand is to establish a heterogeneous data integration platform, which Publish business information through the Web to achieve its business goals. In response to this need, this paper proposes a method of accessing heterogeneous databases using a middleware based on XML to realize the integration and exchange of heterogeneous data.