数据库设计中E-R模型设计的探究

In the design of database E-R model design of the probe

数据库设计中概念模型设计的核心是E-R模型设计。设计实践中,设计者感到更多的困惑是实体的选择、属性的确定及实体间联系的确定。在此提出了如何选择实体,如何确定实体的属性及如何确定实体间的联系。这就是文中要侧重探讨的问题。

The core design of conceptual model in database design is the design of E-R model. In the design practice, Designers feel more confused is to determine the relationship of entities, attributes the choice between. In this paper presents how to select entity, How to determine the attributes of entities and how to determine the link between the entity.This article is to focus on the problem.