摘要
数据库概念模式的设计是数据库设计过程中最重要的环节之一。概念模式设计的优劣对数据库的使用、维护有很大的影响,也是管理信息系统设计成败的关键。本文根据对有关理论的探讨和设计学院排课管理信息系统的体会,主要讨论概念模式的基本概念和设计方法两个问题。
Designing the conceptual model in database is one of the most important factors for the database designing process. The advantage and disadvantage of its design has a great effect on the application and maintenance to database,and the key factor to achieve it as well. This article is based on probing in some relative theories and the reception of the courses arrangement of manage information systems. It also mainly discusses two problems between the basic concept and designing methods of the conceptual model.
出处
《现代电子技术》
2005年第24期73-75,共3页
Modern Electronics Technique
关键词
概念模式设计
E-R图
排课系统
数据类型
design of conceptual model
E - R diagram
courses arrangement system
data type
