【摘要】 现有CAD系统大多是面向单用户的,而实际设计工作往往由多个设计者协同完成,因此CAD系统应支持多个设计者协同工作以提高效率SQLServer有效解决了并发控制、数据的一致性保证等问题,这些正是计算机支持的协同工作所要解决的关键问题因此基于SQLServer数据库设计了支持协同工作的商业CAD系统文中介绍了协同工作模型的设计与实现,并对协同工作设计中的关键技术的实现作了探讨更多还原

【Abstract】 Most CAD systems support a single designer, but sometimes a design task needs to be done by a group of designers cooperatively. A CAD system should support cooperative work among designers to get high efficiency. The problems of concurrency control and consistency enforcement have been solved by SQL Server. Those are just problems which should be solved through computer supported cooperative work.Based on SQL Server database, a collaborative market computer aided design system is designed. Design and implementation of the cooperative work model is introduced. The implementation of crucial technologies needed in the computer supported cooperative work is discussed.更多还原