As a standalone use case model is frequently created per problem domain, and consequently, application development project, the enterprise-wide big picture gets blurred in many cases.

由于每个问题域常常都创建单独的用况模型，因此，应用程序开发项目，这个企业的大方向在许多情况下变得模糊。

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Then we give a model for the requirements management process which is mainly used in MIS project of small or middle enterprise and use case is the main requirements modeling language.

文章首先对需求和需求管理的相关知识及常见软件开发过程中的需求管理情况作了简要地介绍，然后对需求管理过程进行了生命周期的划分，接着提出了一种需求管理模型。

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