A. revoke B. grant C. delete user D. drop user
A. mysql B. grant C. set password D. change password
A. show grants for student1@localhost B. show grant for student1@localhost C. show grants on student1@localhost D. show grant on student1@localhost
A. insert B. update C. delete D. select
A. 使用Create table语句 B. 使用Create index语句 C. 使用Alter table语句 D. 使用Create database语句
A. 创建唯一的索引,允许空值 B. 只允许以表中的第一字段建立 C. 允许有多个主键 D. 为标识表中唯一的实体
A. 对 B. 错