非常不错的vc操作数据库源码。不是完整的程序，练习作品，希望对各位有所帮助。-Vc very good source database operation. Not complete the procedure, practice works, you want to be helpful.

用软件方法解决临界区问题,用软件的流程控制方式实现两个线程的协作与互斥控制,读懂sm6.cpp，并修改为目标代码 ,用全局变量实现线程阻塞。-With software solutions to critical problems, software flow control method to achieve two threads collaboration and exclusive control, read sm6.cpp, and modify the object code, us