单选题授予sa用户在SCOTT.EMP表中SAL列的更新权限的语句是（）。A GRANT CHANGE ON SCOTT.EMP TO SAB GRANT UPDATE ON SCOTT.EMP（SAL） TO SAC GRANT UPDATE （SAL） ON SCOTT.EMP TO SAD GRANT MODIFY ON SCOTT.EMP（SAL） TO SA

“把查询SC表和更新SC表的9rade列的权限授予用户user”的正确SQL语句是（ ）。

A)GRANT.SELECT sc, UPDATE sc.grade TO user

B)GRANT SELECT, UPDATE (grade) ON TABLE sc TO user

C)GRANT SELECT, UPDATE ON TABLE sc.grade TO user

D)GRANT SELECT ON TABLE sc, UPDATE ON TABLE sc(grade) TO user

授予用户U1，U2和U3在关系employee的salary属性上的UPDATE权限的语句是

A．GRANT ON employee TOU1，U2，U3

B．GRANT UPDATE ON employee TO U1，U2，U3

C．GRANT UPDATE(salary) ON employee

D．GRANT UPDATE(salary)ON employee TO U1，U2，U3

（ 35 ） “ 把查询 sc 表和更新 sc 表的 grade 列的权限授予用户 user1 ” 的正确 SQL 语句是

A ） GRANT SELECT ， UPDATE （ grade ） ON TABLE sc TO user1

B ） GRANT SELECT sc ， UPDATE sc . grade TO user1

C ） GRANT SELECT ， UPDATE ON TABLE sc . grade TO user1

D ） GRANT SELECT ON TABLE sc ， UPDATE ON TABLE sc(grade) TO user1

A.GRANT CHANGE ON SCOTT.EMP TO SA

B.GRANT UPDATE ON SCOTT.EMP（SAL） TO SA

C.GRANT UPDATE （SAL） ON SCOTT.EMP TO SA

D.GRANT MODIFY ON SCOTT.EMP（SAL） TO SA

●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) ;

(52)

A．UPDATE(name)

B．DELETE

C．SELECT

D．INSERT

(53)

A．FORALL

B．CASCADE

C． WITH GRANT OPTION

D．WITH CHECK OPTION

Examine the structure of the EMPLOYEES table:EMPLOYEE_ID NUMBER NOT NULLEMP_NAME VARCHAR2(30)JOB_ID VARCHAR2(20) DEFAULT ‘SA_REP‘SAL NUMBERCOMM_PCT NUMBERMGR_ID NUMBERDEPARTMENT_ID NUMBERYou need to update the records of employees 103 and 115. The UPDATE statement you specify should update the rows with the values specified below:JOB_ID: Default value specified for this column definition.SAL: Maximum salary earned for the job ID SA_REP.COMM_PCT: Default value specified for this commission percentage column, if any. If no default value is specified for the column, the value should be NULL. DEPARTMENT_ID: Supplied by the user during run time through substitution variable.Which UPDATE statement meets the requirements?（）

A. UPDATE employees SET job_id = DEFAULT AND Sal = (SELECT MAX(sal) FROM employees WHERE job_id = ‘SA_REP‘) AND comm_pct = DEFAULT AND department_id = &did WHERE employee _id IN (103,115);

B. UPDATE employees SET job_id = DEFAULT AND Sal = MAX(sal) AND comm_pct = DEFAULT OR NULL AND department_id = &did WHERE employee_id IN (103,115) AND job _ id = ‘SA_ REP‘;

C. UPDATE employees SET job_id = DEFAULT, Sal = (SELECT MAX(sal) FROM employees WHERE job_id = ‘SA_REP‘), comm_pct = DEFAULT, department_id = &did WHERE employee_id IN (103,115);

D. UPDATE employees SET job_id = DEFAULT, Sal = MAX(sal), comm_pct = DEFAULT, department_id = &did WHERE employee_id IN (103,115) AND job _ id = ‘SA_ REP‘;

E. UPDATE employees SET job_id = DEFAULT, Sal = (SELECT MAX(sal) FROM employees WHERE job_id = ‘SA_REP‘) comm_pct = DEFAULT OR NULL, department_id = &did WHERE employee_id IN (103,115);

“把查询sc表和更新sc表的grade列的权限受予用户user1”的正确SQL语句是______。

A．GRANT SELECT, UPDATE(grade)ON TABLE sc TO user1

B．GRANT SELECT sc, UPDATE sc, grade TO user1

C．GRANT SELECT, UPDATE ON TABLE sC.grade TO user1

D．GRANT SELECT ON TABLE sc, UPDATE ON TABLE sc(grade) TO user1

“把查询SC表和更新SC表的9rade列的权限受予用户userl”的正确SQL语句是（ ）。

A) GRANT SELECT, UPDATE (grade) ON TABLE sc TO userl

B) GRANT SELECT so,UPDATE sc,grade TO userl

C) GRANT SELECT, UPDATE ON TABLE sc.grade TO userl

D) GRANT SELECT ON TABLE sc, UPDATE ON TABLE sc (grade)TO userl

A.FOR ALL

B.CASCADE

C.WITH GRANT OPTION

D.WITH CHECK OPTION

● 将表Emp的empname属性列的修改权限授予用户LIU， 并允许LIU 再将此权限转授其他人，实现的SQL语句是 （48） 。

（48）

A. GRANT update on Emp TO LIU WITH CHECK OPTION

B. GRANT update(empname) on Emp TO LIU WITH CHECK OPTION

C. GRANT update on Emp TO LIU WITH GRANT OPTION

D. GRANT update(empname) on Emp TO LIU WITH GRANT OPTION