数据分类与绘制实体-关系图的计算机实现

The Implementation of Data Classification and Drawing Entity-Relation Graph With Computer

摘要: 本文介绍了我们在IBM PC 及其兼容机上用Turbo Prolog 语言实现数据分类工具的技术;用Turbo C 编制的基于树图文法的实体-关系(E-R)图的生成器与归并器;并链接为一个系统,目的是便于非计算机专业的应用开发人员根据工作实际需要绘制、修改、保存数据库概念模式设计及E-R 图。

Abstract: This paper presents the technique of data classification implemented by Turbo Prolog.and the generator and merger of entity-relation graph implemented by Turbo C with IBM PC compu-ter.This echnique may help persons in non-computer field to draw,modify and hold the conceptmodel of data base and entity-relation graph.