工程数据库系统的版本管理模型

A Version Management Model for Engineering Database Management Systems

提出了面向对象数据库系统的设计对象版本管理模型。对模型从工程数据库层次、版本组织、动态构成、空间组织等方面进行了阐述。

A model for version management of design objects coupled with an object-oriented engi-neering database system is presented.Some problems including the database, hierarchy,ver-sion organization,dynamic configuration and work space organization are described.Accord-ing to the hierarchical nature of design activities, three levels of database,the public,project and private database are logically organized.In the model,the derivation of history by ver-sion is used to reflect the evolution of the design object.For the identification of the situation anlstate of a design object,three version status,the working,frozen,and released status have been used.The dynamic data are described by those obiects whose versions are build-able. The current version and dynamic configuration operations are discussed.Versions of different status are stored in different databases and can be moved about among the databas-es.