Being an important part of Information System, Database Security has absorbed much attention fordecades. First, we bring......

The similarities and differences between an active database and a traditional database are expounded. The general model ......

工程数据库及其管理系统是CAD/CAM—体化工程的核心。本文介绍的土建工程数据库及其管理系统,以土建施工图设计为主要应用对象,说......