摘要
通过对河南省公路工程定额分布式数据库数据需求的分析,运用E-R建模方法建立了公路工程定额分布式数据库概念模型,并在此基础上确立了逻辑模型中的数据表及关系模式。
First, the supply and demand of highway project quota distributed database data of He＇nan province were analyzed. Then, the conceptual model of the distributed database was built based on Entity Relation method. As a result, data tables and relation modes in logic model were established.
出处
《交通与计算机》
2007年第1期132-135,共4页
Computer and Communications
基金
河南省交通厅科技项目资助(批准号:2005P451)
关键词
公路工程定额
E—R法
概念模型
逻辑模型
highway project quota, Entity Relation Method
conceptual model
logic model
