People can easily access all kinds of heterogeneous and autonomous information resource through Internet. An information integration system provides the unified interface for people seamlessly accessing that information.

• 通过Internet人们可以方便快捷的访问各种异构、自治的信息源,而信息集成系统就是使用户进行无缝访问这些信息,它通过提供一个统一的界面来存取那些资源。