The paper introduces the type test computation system for small and medium asynchronous motor by using object oriented technology, multi text window, database management technology and VB language.

本文介绍了采用面向对象技术，多文本窗口及数据库管理技术，利用VB语言开发的视窗化的中小型异步电机型式试验计算系统。

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To learn how to use object oriented language to explore middle and small designing database system and to explore a front running system of cell phones.

学会使用面向对象型语言开发中小型的数据库系统设计并开发一个手机前台营业系统。

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It is emphasized that the query plan of object-oriented graphic database, query controller structure of graphic database, language specification of GDQL and query optimization.

介绍了面向对象图形数据库的一般查询方法、图形数据库的查询处理器结构、GDQL的语言描述以及查询优化等内容。

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