题目内容

下面选项中,用于控制修改表结构或重命名表的权限是

ALTER权限
B. ALERT权限
C. RENAME权限
D. UPDATE 权限

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下面实现收回user4用户INSERT权限的语句中,正确的是

A. REVOKE INSERT ON *.* FROM 'user4'@'localhost';
B. REVOKE INSERT ON %.% FROM 'user4'@'localhost';
C. REVOKE INSERT ON *.* TO 'user4'@'localhost';
D. REVOKE INSERT ON %.% TO 'user4'@'localhost';

下面选项中,可实现比SELECT语句更方便查询用户权限信息的语句是

A. SHOW GRANTS语句
B. GRANT语句
C. SELECT GRANTS语句
D. GRANT USER语句

1. What has made colleges the most Internet-accessible spots in the world?2. According to one leading university director, why are college students encouraged to use smartphones on campus?3. Why does the author ask us to remember to regulate and balance our time?4. Some colleges increased their budgets for information technology. What did they do with the money?5. Why did one university give every one of its incoming freshmen a free Apple iPad?

两段锁协议规定,当事务释放了一个封锁以后,事务进入解锁阶段,在该阶段只能进行解锁操作不能再进行加锁操作

A. 对
B. 错

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