Abstract: EER (Extended Entity Relationship) methodology is considering suitable for this job with its strong points on objects'structure. relationship. and integrity; though there may lack some standards. This paper describes the conception, implementation and some improvement of EER based on the results of work carried out in this area.

摘要： EER方法虽然没有形成标准，但它将重点放在对象的结构、联系和完整性上，不失为一种有效的OODB设计方法。结合科研实践探索了EER的概念，模式以及改进方法。

关键词: 面向对象, 面向对象数据库管理系统, 扩充实体关系

CLC Number: 

• TP311.11