设计题: 使用 SQL Server Management Studio 或 T-SQL 语句,完成下面的操作。 在 BOOK 表中删除上述约束。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】综合填空。 My name is Mike Green. I come from England. I study in a middle school in London. My father works in a school. My mother doesn't work. She stays at home and does the housework. I go to school fi...