【摘要】 传统E -R模型是对现实世界的一种有力的抽象 ,但是E-R模型中的实体关系十分复杂 ,尤其是在实体数目大、相互联系复杂的情形。为了能够有效地提高数据录入模块的开发效率 ,文中对传统E-R模型进行改进 ,提出一种基于E -R模型层次化的录入技术 ,即通过对传统E-R模型产生的逻辑模型 (关系模型 )按构成主键的主属性数目进行层次化 ,再按主键层次生成录入界面 ,首先生成第 1层实体的录入界面 ,再调用第 1层实体的录入界面来生成第 2层实体的录入界面 ,直到生成最底层实体的录入界面更多还原

【Abstract】 The traditional E-R’s model can abstract the real world strongly, but the relationship among entities in E-R’s model is very mixed and disorderly .In order to improve the productivity of the module of data input,the layered E-R model based input technology is presented. The logic model( relational model) produced by the traditional E-R model is layered by primary keys. According to the layered model ,the input interface is produced .First the input interface of 1th-tier entity is produced .By using the input interface of 1th-tier entity ,the input interface of 2rd-tier entity is produced ,until the input interface of the last tier is produced.更多还原