主要介绍基于UG二次开发的VC编程教程，很适合与初学者使用，同时也介绍了和数据库的相关知识-Introduces the development of UG VC programming tutorial, it is suitable for use with beginners, but also describes the knowledge and database

catia 二次开发教程，CAA(Component Application Architecture)C++是CATIA的一整套C++函数库，该函数库在CATIA运行时加载。用户通过安装RADE(Rapid Application Development Environment)模块，用户可以在VC++编程环境下编制程序，与CATIA进行通信。(CATIA secondary development course)