单选题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> GR

第1题：

第2题：

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;

第3题：

The HR user creates a view with this command：  SQL> CREATE VIEW emp_v AS SELECT * FROM scott.emp；  Now HR wants to grant the SELECT privilege on the EMP_V view to the JIM user.  Which statement is true in this scenario？（）

• A、HR can grant the privilege to JIM but without GRANT OPTION.
• B、HR can grant the privilege to JIM because HR is the owner of the view.
• C、SCOTT has to grant the SELECT privilege on the EMP table to JIM before this operation.
• D、HR needs the SELECT privilege on the EMP table with GRANT OPTION from SCOTT for this operation.

第4题：

User SCOTT wants to perform a bulk insert operation in the EMP_DEP table. SCOTT receives thefollowing error after the INSERT statement is issued and few rows are inserted： INSERT INTO EMP_DEP （emp_id，name，salary，dep_name，mgr_id） *  ERROR at line 1：  ORA-01653： unable to extend table SCOTT.EMP_DEP by 128 in tablespace USERS Identify two actions either of which will help you resolve this problem.（）

• A、Grant the RESOURCE role to SCOTT.
• B、Add data files to the USERS tablespace.
• C、Grant the CREATE ANY TABLE privilege to SCOTT.
• D、Increase the space for SCOTT on the USERS tablespace.
• E、Increase the size of the data file associated with the USERS tablespace

第5题：

User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， or any data definition language （DDL） command： SQL> SELECT ename FROM emp  2 WHERE job=’CLERK’ FOR UPDATE OF empno；  SCOTT has opened another session to work with the database instance.  Which three operations wouldwait when issued in SCOTT’s second session（）

• A、LOCK TABLE emp IN SHARE MODE；
• B、LOCK TABLE emp IN EXCLUSIVE MODE；
• C、UPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；
• D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；
• E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；

第6题：

The user SCOTT executes the following command successfully to increase the salary values in one of his sessions：  SQL> UPDATE emp SET sal=sal*1.15 WHERE deptno=20；  Before SCOTT ends the transaction， user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values. Why does HR still see the old data？（）

• A、because of redo data from redo log file
• B、because of data from database buffer cache
• C、because of data from a temporary tablespace
• D、because of undo data from the undo tablespace

第7题：

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.

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第13题：

The user SCOTT who is the owner of ORDERS and ORDERJTEMS tables issues the following  GRANT command：  GRANT ALL   ON orders， order_items   TO PUBLIC；   What correction needs to be done to the above statement？ （）

• A、 PUBLIC should be replaced with specific usernames.
• B、 ALL should be replaced with a list of specific privileges.
• C、 WITH GRANT OPTION should be added to the statement.
• D、 Separate GRANT statements are required for ORDERS and ORDERJTEMS tables.

第14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 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

第15题：

The DBA issues this SQL command: CREATE USER scott IDENTIFIES by tiger; What privileges does the user Scott have at this point?（）

• A、No privileges.
• B、Only the SELECT privilege.
• C、Only the CONNECT privilege.
• D、All the privileges of a default user.

第16题：

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

第17题：

The DBA issues this SQL command:CREATE USER scott IDENTIFIED by tiger;What privileges does the user Scott have at this point?（）

• A、no privileges
• B、only the SELECT privilege
• C、only the CONNECT privilege
• D、all the privileges of a default user

第18题：

User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK， orany data definition language （DDL） command： SQL> SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance.  Which three operations would waitwhen issued in SCOTT’s second session（）

• A、LOCK TABLE emp IN SHARE MODE；
• B、LOCK TABLE emp IN EXCLUSIVE MODE；
• C、UPDATE emp SET sal=sal*1.2 WHERE job=ANAGER？UPDATE emp SET sal=sal*1.2 WHERE job=？ANAGER？
• D、INSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；
• E、SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno

第19题：

User SCOTT executes the following command on the EMP table but has not issued COMMIT， ROLLBACK，or any data definition language （DDL） command：  SQL> SELECT job FROM emp  2  WHERE job=’CLERK’ FOR UPDATE OF empno;  SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session？（）

• A、LOCK TABLE emp IN SHARE MODE;
• B、LOCK TABLE emp IN EXCLUSIVE MODE;
• C、DELETE FROM emp WHERE job=’MANAGER’;
• D、INSERT INTO emp（empno，ename） VALUES （1289，’Dick’）;
• E、SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;

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