The paper discusses the research on collaborative design, engineering database theories and collaborative environments of engine CAD, introduces the backstage dbms-oracle particularly.

本文对协同设计、工程数据库等相关理论作了深入的研究，并对发动机工程CAD的工作环境，后台数据库管理系统ORACLE作了详细的阐述。

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This design scheme is made up of the stage browse exercise visit module and the backstage Database management applying module.

该设计方案由前台浏览练习访问模块和后台数据库管理应用模块组成。

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The thesis introduces the structure and function of the system. The design of backstage supporter's database and key technology of system were discussed by the thesis.

本文介绍了系统的结构和功能，对系统后台数据库设计和系统中的关键技术进行了论述。

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