污水厂读取上位机串口232的数据并保存在access数据库里，具体的数据可以根据上位机的变量来修改，可以做为学习用-Wastewater treatment plant to read the data of the host computer serial port 232 and stored in the database access to specific data can be modified based on the variables of the host computer,

通过ADO方法，实现VC与数据库链接，主要添加删除修改功能-Implementation of VC and database links