MySql数据库管理系统的补丁 （JSP版）,此补丁修邮件通讯问题，详细请看附带说明文件。-MySql database management system patches (JSP version), this patch repair mail communications, See attached detailed documentation.

描述司机与售票员之间的进程问题，熟悉p和v操作 ,真的好(Describe the process between the driver and the conductor, and be familiar with the P and V operations. It's really good)