mysql数据库
1.数据库互相联通，非root或sa账号。数据库名称dbpractice
2.创建表（表定义），插入记录，常规SQL语句，主键，外键，约束，自增长列
3.基础数据词典
4.建立视图
5.存储过程
6.函数
7.触发器
8.建立索引
9.将单表数据导入和导出成txt，csv或xls格式
10.将整库数据导出成脚本和二进制文件，并恢复成dbpractice2数据
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