简单介绍了异构数据库的概念，并探讨了实现异构数据库互联的基本方法。

This paper briefly introduces the conception of heterogeneous databases and discusses the basic method to realize the connection of heterogeneous databases.

异构数据库互操作的核心思想是数据共享和透明访问.

Core idea of heterogeneous databases interoperation is data sharing and transparent accessing.

异构数据库互操作研究涉及到分布式计算,为此, 本文研究了CORBA技术.

Heterogeneous databases interoperation is related to distributed computing, so the paper studied CORBA technique.

尤其是关系型数据库产品问世以来，异构数据库之间实现互操作及数据共享的问题就一直被人们所关注。

Especially since relational database products come out, people pay close attention to the issue of data interoperation and data sharing.

论文在对现有异构数据库间信息交换方法进行系统分析的基础上，提出了基于XML模板映射和数字签名技术在异构数据库之间进行安全信息交换的高效方法。

On the basis of analyzing the current exchanging methods systematically, an efficient secure solution to data exchange based on XML and encryption and digital signature has been proposed.

此外,本文还实现了一个分布式异构数据库检索系统,从实践上对该模型进行测试, 取得了良好的效果.

A distributed isomerous DataBase System is developed to test the above model, whose results are wonderful.

异构数据库之间不能流畅地交换数据是油田数据集成的主要瓶颈之一.

A key problem of oilfield data integration is that data cannot be exchanged among isomeric databases.

基于XML的数据集成应用指屏蔽底层分布式、异构数据库的差异，为用户提供统一的XML数据展示视图和数据操作接口。

The XML-based data integration application architecture is analyzed which provides a uniform display view and manipulated interface of XML data for users.