工程数据的版本管理

VERSION MANAGEMENT FOR ENGINEERING DATA

版本管理是工程数据库中必须解决而又难于解决的关键问题。在本文中,给出我们自行研制的工程数据库管理系统EDBMS/2的版本管理模型,提出了DBV和DBV图概念,EDBMS/2系统的应用表明,该模型提供了有效地管理工程设计数据的手段,具有多级版本和复合对象版本管理、数据共享、数据管理局部化以及支持用户(应用程序)对数据库的多种视图等特点。

Version management is one of the most key but difficult problems in engineering data handling. In this paper, a version management model implemented in EDBMS/2 is presented, in which concepts of DBV and DBV graph are proposed. Mechanisms based on these concepts provide efficient design data management such as: multiple version control, sharing of design data, time-varying configurations and so on.