【摘要】 在CIM环境下,CAD几何造型等系统运行时高速存取数据的要求可以利用内存工作区Working Form来满足.CIMS信息集成对工程数据管理的一项主要要求是支持STEP/PDES产品数据交换规范化.北航正在开发的工程数据管理系统EXPDMS以实现管理STEP文本提及的中性文件、Working Form和数据库为目标,直接支持STEP的EXPRESS数据模型,并具有OO性能.更多还原

【Abstract】 In CIM environment, accessing data with high speed during executing CAD geometric modeling systems, may be achieved by using Working Form, One of the essential demands for CIM information integration is that engineering data management supports the STEP/PDES standard for the exchange of product model data. The engineering data management system EXPDES manages neutral fies Working Forms, and databases, which are described in STEP text. EXPDMS supports EXPRESS data model of STEP directly, and it possesses O-O performance.更多还原