更多"The user Sue issues this SQL statem"的相关试题:
[单项选择] The user Sue issues this SQL statement: GRANT SELECT ON sue. EMP TO alice WITH GRANT OPTION; The user Alice issues this SQL statement: GRANT SELECT ON sue. EMP TO reena WITH GRANT OPTION; The user Reena issues this SQL statement: GRANT SELECT ON sue. EMP TO timber; The user Sue issues this SQL statement: REVOKE select on sue. EMP FROM alice; For which users does the revoke command revoke SELECT privileges on the SUE.EMP table?（）
A. Alice only
B. Alice and Reena
C. Alice, Reena, and Timber
D. Sue, Alice, Reena, and Timber
[单项选择]SQL语句Grant Insert On Table SC To U5 With Grant Option 的作用是
A. U5拥有对表SC的Insert权限
B. U5拥有传播Insert的权限
C. U5拥有对表SC的Insert权限或拥有对Insert权限的传播
D. U5不仅拥有对表SC的Insert权限，还可传播此权限
[单项选择]有如下SQL语句： SELECT SUM(工资)FROM职工表WHERE仓库号IN； (SELECT仓库号FROM仓库表WHERE所在城市＝“北京”OR所在城市＝“上海”) 执行语句后，工资总和是
A. 3500.00
B. 3000.00
C. 5000.00
D. 10500.00
[单项选择]The user Alice wants to grant all users query privileges on her DEPT table. Which SQL statement accomplishes this?（）
A. GRANT select ON dept TO ALL_ USER;
B. GRANT select ON dept TO ALL;
C. GRANT QUERY ON dept TO ALL_USERS
D. GRANT select ON dept TO PUBLIC;
[单项选择]SQL语言中，GRANT和REVOKE语句用于实现数据库的（）
A. 完整性控制
B. 一致性控制
C. 并发控制
D. 安全性控制
[单项选择]SQL语言的GRANT和REVOKE语句主要用来维护数据库的( )。
A. 安全性
B. 完整性
C. 可靠性
D. 一致性
