It provides uniform resource of cooperative design and information exchange for automobile corporations Ncae系统使用asp和ado技术实现了异地汽车企业的协同分析设计资源共享与信息交换。
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Users security model is put forward . the article mostly researched the method of access to web database using ado and groupware technology of asp 针对ncae系统用户的访问特点，建立了安全的用户访问模型，以确保系统的安全性。
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Internet based remote cooperative design is the application in the field of products design of cooperative theory . firstly the web based cscw technology is discussed and the important method that the share workspace can solve disperse cooperation is discussed . then the basic system and key technology are discussed and analyzed 基于internet的协同分析设计是协同工作理论在汽车产品分析设计领域中的应用，本文首先结合web的体系结构特点探讨了基于web的协同工作技术，对基于internet的协同设计理论进行研究，重点讨论了基于web的ncae系统的不同开发层次及相应的关键技术。
