【摘要】 介绍了ERwin的特点,以一个具体的实例应用阐述了如何使用ERwin在数据库设计阶段建立逻辑模型和物理模型,并用物理模型在数据库服务器上产生模型实例等技术问题,并给出了使用ERwin建立的智能考试系统的逻辑模型和物理模型.对于想高效、快速建立实体 关系(E R)模型的数据库应用程序的开发者来说,有一定的参考价值和借鉴意义.更多还原

【Abstract】 This article Introduces the characteristics of ERwin and expatiates on using ERwin to establish logic model and physics model in database design by a specific instance. The technique problem is put forward in using physics model to establish the model instance on the database server. This article gives logical model and physical model of intelligence exam system. This article may offer some reference for the developers who want to effectively and rapidly establish the E-R model in database application.更多还原