数据库实验报告，基于sql，陈志柏编著的，基本的删除添加修改-Database lab report, based on the sql, Chen Zhibo edited, added to modify the basic delete

这是深圳大学陈必红博士《C++数学算法》中的源代码，写的非常详细。-This is the Shenzhen University Dr. Chen Bihong " C++ mathematical algorithms in the source code, written in great detail.