收回用户li对表employee的查询权限,同时级联收旧li授予其他用户的该权限,SQL语句为:(1)select ON TABLE employee FROM li(2); (2)处应选择()
A: RESTRICT
B: CASCADE
C: WITH GRANT OPTION
D: WITH CHECK OPTION
A: RESTRICT
B: CASCADE
C: WITH GRANT OPTION
D: WITH CHECK OPTION
举一反三
- 收回用户li对表employee的查询权限,同时级联收回li授予其他用户的该权限,则SQL语句为: ______select ON TABLE employee FROM li ______; A: RESTRICT B: CASCADE C: WITH GRANT OPTION D: WITH CHECK OPTION
- 收回用户li对表employee的查询权限,同时级联收旧li授予其他用户的该权限,SQL语句为:(1)select ON TABLE employee FROM li(2); (1)处应选择() A: GRANT B: GIVE C: CALL BACK D: REVOKE
- 收回用户li对表employee的查询权限,同时级联收回li授予其他用户的该权限,则SQL语句为: ______select ON TABLE employee FROM li ______; A: GRANT B: GIVE C: CALL BACK D: REVOKE
- 将表employee中name列的修改权限赋予用户Liu,并允许其将该权限授予他人,应使用的SQL语句为: GRANT 52 ON TABLE employee TO Liu 53 ; A: FOR ALL B: CASCADE C: WITH GRANT OPTION D: WITH CHECK OPTION
- 将查询SC表的权限授予用户U1,并允许该用户再将此权限授予其他用户。实现此功能的正确SQL语句是______。 A: GRANT SELECT TO TABLE SC ON U1 WITH PUBLIC B: GRANT SELECT ON TABLE SC TO U1 WITH PUBLIC C: GRANT SELECT TO TABLE SC ON U1 WITH GRANT OPTION D: GRANT SELECT ON TABLE SC TO U1 WITH GRANT OPTION