数据结构      星期5                             7教室                                                 4    刘老师   
英语          星期3                             18教室                                                4    李老师   
数据库        星期4                             26教室                                                4    朱老师   
微机          星期1                             7教室                                                 4    张老师   
网络安全      星期2                             7教室                                                 4    张老师   
计算机维护    星期3下午                         7教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师   
语文          星期5                             6教室                                                 4    刘老师

列名：
课程名称 时间 地点 节次 老师

列名"课程名"无效.你就不会改改列名?..硬是一乘不变地照搬?.

你是不是在两个表之间建立外键约束了呢

版主说的是