The function and realization of each tier is analyzed and the realization of this frame is shown.

同时详细分析了各层的作用和实现方法，并简要地介绍了框架的总体实现。

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This paper first introduces J2EE frame and n-tier model of enterprise application.

首先介绍了J2EE框架和企业应用的多层结构模型；

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Then this paper give out the frame - work of ve's information system based on distributed system and component technology and analyzes every tier of this frame - work, especially the...

首先阐述了虚拟企业的概念及其对信息系统的要求，然后基于分布系统和组件技术的概念提出虚拟企业信息系统的框架，并对框架的各个层次特别是中间层进行了分析介绍。

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