一种实用的应用系统对象数据结构模型  

A practical data structure model for the object of database application system

作　　者：李澎林[1] 毛国红[2] 

机构地区：[1]浙江工业大学软件学院,浙江杭州310032 [2]浙江工业大学信息工程学院,浙江杭州310032

出　　处：《浙江工业大学学报》2008年第4期378-381,共4页Journal of Zhejiang University of Technology

摘　　要：在数据库应用系统中,数据库模型是整个系统的基础.应用软件建立在数据库模型之上,应用软件的应用对象和数据库模型之间应该是对应的.以E_R模型为代表的数据库概念模型是数据库模型设计的关键.提出了一种基于E_R模型的数据库应用系统对象数据结构模型.具体分析了E_R模型的面向对象特性和应用系统对象的特点,研究了应用系统对象数据结构与E_R模型的映射关系,并对E_R模型作了修改和补充.实践表明,通过该模型进行数据库应用系统的对象建模非常简单有效.In database application system, the database model is an important base of the whole system. An application software is built on the database model. So the application object of the application software should relate to the database model. Database conception model based on E_R model is the key of the database model design. A new data structure model for the database application system object is proposed. This paper analyzes the characteristics of application system object and the characteristics of object-oriented system based on E_ R models. The mapping relationship between the data structures of application system objects and E_R models is studied. The E_R model is amended and supplemented in some aspects. The experiment shows that the object model of database application system, which is built based on this model, is very simple and effective.

关 键 词：E_R 面向对象 数据结构模型 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]