基于模板的冷冲模CAD系统中的数据模型研究

Research on Data Model in Die CAD System Based on Template

工程数据模型决定了对象的存储方式和访问方式,该文讨论了在Windows平台上开发的基于模板的冷冲模CAD系统的数据模型,将知识、规则等语义信息与面向对象技术相结合,提出了语义对象数据模型。在模板中将设计信息按照对象之间的关系组织起来,加强了对数据的管理,并能表达多种复杂的语义等知识信息,同时介绍了工程数据库系统数据模型的逻辑设计和系统的体系结构。

Engineering data model decides storage and access way of object.The paper discusses the data model of die CAD system based on the template in Windows environment ,and presents semantic-object data model whose definition combines semantic information,such as knowledge and rules,with object -oriented technology.In the template,design information is connected by the relationship of objects.So,date management is improved and a lot of complex semantic information is defined availably.A logical design about data model&system architecture in the engineering database is introduced also.