There have been a growing number of heterogeneous database systems on the Internet,which lead to data sharing difficulties and result in a tremendous waste of resources.This paper explores the way to establish two types of heterogeneous database platform,describes the use of XML and Web Service data in heterogeneous database access principle to achieve the data exchange between heterogeneous database tables and provide technical support for data sharing among heterogeneous databases.%随着Internet上连有越来越多的异构数据库系统,这就导致数据共享比较困难,造成了资源的极大浪费。本文建立了两种异构数据库平台,阐述了使用XML和Web Service实现异构数据库存取数据的原理,最后实现了异构数据库中表之间数据交换,为异构数据库之间数据共享提供了技术支持。
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