SQL中的REVOKE是 ______命令。
SQL中的REVOKE是 ______命令。
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实现“取消用户USER4对学生表STUD中学号(XH)的修改权限”这一功能的SQL语句是( )。A.REVOKE UPDATE (XH) ON TABLE FROM USER4;B.REVOKE UPDATE (XH) ON TABLE STUD FROM PUBLIC ;C.REVOKE UPDATE (XH) ON TABLE STUD FROM USER4;D.REVOKE ALL PRIVILEGES ON TABLE STUD FROM USER4;
下列SQL语句中,能够实现“收回用户U4对学生表(STUD)中学号(XH)的修改权”这一功能的是()。 A. REVOKE UPDATE(XH) ON TABLE FROM U4B. REVOKE UPDATE(XH) ON TABLE FROM PUBLICC. REVOKE UPDATE(XH) ON STUD FROM U4D. REVOKE UPDATE(XH) ON STUD FROM PUBLIC
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 onlyB. Alice and ReenaC. Alice, Reena, and TimberD. Sue, Alice, Reena, and Timber
实现“收回用户U4对学生表(STUD)中学号(XH)的修改权”这一功能的正确SQL语句是______。A.REVOKE UPDATE(XH) ON TABLE FROM U4B.REVOKE UPDATE(XH) ON TABLE STUD FROM PUBLICC.REVOKE UPDATE (XH) ON TABLE STUD FROM U4D.REVOKE ALL PRIVILEGES ON TABLE STUD FROM U4
下列SQL语句中,能够实现“收回用户ZHAO对学生表(STUD)中学号(XH)的修改权”这一功能的是( )。A.REVOKE UPDATE(XH)ON STUD TO ZHAOB.REVOKE UPDATE(XH)ON STUD TO PUBLICC.REVOKE UPDATE(XH)ON STUD FROM ZHAOD.REVOKE UPDATE(XH)ON STUD FROM PUBLIC
下列SQL语句中,能够实现“收回用户ZHAO对学生表(STUD)中学号(XH) 的修改权”这一功能的是()A、REVOKE UPDATE(XH) ON TABLE FROM ZHAOB、REVOKE UPDATE(XH) ON TABLE FROM PUBLICC、REVOKE UPDATE(XH) ON STUD FROM ZHAOD、REVOKE UPDATE(XH) ON STUD FROM PUBLIC
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 onlyB、Alice and ReenaC、Alice, Reena, and TimberD、Sue, Alice, Reena, and Timber
The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command: SQL GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION; The user SCOTT executes this command to grant privileges to the user JIM: SQL GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim; Now, the user HR decides to revoke privileges from JIM using this command: SQL REVOKE SELECT,INSERT,UPDATE ON emp FROM jim; Which statement is true after HR issues the REVOKE command()A、The command fails because SCOTT still has privileges.B、The command succeeds and privileges are revoked from JIM.C、The command fails because HR cannot revoke the privileges from JIM.D、The command succeeds and only HR has the privilege to perform the SELECT, INSERT, and UPDATEoperations on the EMP table.
单选题REVOKE属于SQL语言的()。A数据查询B数据操纵C数据定义D数据控制