单选题Which of the following statements allows BOB to revoke access to the SAMPLE database from user TOM?（）A REVOKE ACCESS ON DATABASE FROM USER bobB REVOKE CONNECT ON DATABASE FROM USER tomC REVOKE tom FROM ACCESS ON DATABASE BY USER bobD REVOKE tom FROM CO

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第2题：

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 ZHAO       
• B、REVOKE UPDATE(XH) ON TABLE FROM PUBLIC
• C、REVOKE UPDATE(XH) ON STUD FROM ZHAO         
• D、REVOKE UPDATE(XH) ON STUD FROM PUBLIC

第3题：

Which of the following statements allows BOB to revoke access to the SAMPLE database from user TOM?（）

• A、REVOKE ACCESS ON DATABASE FROM USER bob
• B、REVOKE CONNECT ON DATABASE FROM USER tom
• C、REVOKE tom FROM ACCESS ON DATABASE BY USER bob
• D、REVOKE tom FROM CONNECT ON DATABASE BY USER bob

第4题：

Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?（）

• A、REVOKE ALL PRIVILEGES FROM USER tom
• B、REVOKE ALL ON EMPLOYEE FROM USER tom
• C、REVOKE EXECUTE ON EMPLOYEE FROM USER tom
• D、REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom

第5题：

How would you grant the RVPC user access to specific RMAN database records in the RMAN virtual private catalog？（）  

• A、 Issue the grant command from the SYS user （or equivalent） of the target database.
• B、 Issue the grant command from the SYS user （or equivalent） of the recovery-catalog database.
• C、 Issue the grant command from the recovery catalog-owning schema user account in the recovery catalog.
• D、 Issue the grant command from RMAN when connected to the recovery catalog-owning schema.
• E、 Issue the grant command from RMAN when connected to the target database.

第6题：

You have two database servers SEMP and SACCT. The database in the SEMP server maintains the employeeinformation and the database in the SACCT server maintains the accounts payable information. The employeessubmit the expense reports to the accounts payable department. A user of the accounts payable databasewants to extract the employee information from the database in the SEMP server for cross-verification.  Whichschema object enables the user to access the information from the remote database（）

• A、Cluster
• B、Database link
• C、Mapping table
• D、Materialized view

第7题：

You have two database servers SEMP and SACCT. The database in the SEMP server maintains theemployee information and the database in the SACCT server maintains the accounts payable  information.The employees submit the expense reports to the accounts payable department. A user of the accountspayable database wants to extract the employee information from the database in the SEMP server for cross-verification.  Which schema object enables the user to access the information from the remote database（）

• A、Cluster
• B、Database link
• C、Mapping table
• D、Materialized view

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Users of your web application have requested that they should be able to set the duration of their sessions.So for example， one user might want a webapp to stay connected for an hour rather than the webapp’sdefault of fifteen minutes； another user might want to stay connected for a whole day. Furthermore， youhave a special login servlet that performs user authentication and retrieves the User object from the database. You want to augment this code to set up the user’s specified session duration. Which codesnippet in the login servlet will accomplish this goal？（）

• A、User user = // retrieve the User object from the database session.setDurationInterval（user.getSessionDuration（））；
• B、User user = // retrieve the User object from the database session.setMaxDuration（user.getSessionDuration（））；
• C、User user = // retrieve the User object from the database session.setInactiveInterval（user.getSessionDuration（））；
• D、User user=//retrieve the User object from the database session.setDuration（user.getSessionDuratio（））；
• E、User user = // retrieve the User object from the database session.setMaxInactiveInterval（user.getSessionDuration（））；

第14题：

Which of the following statements is used to prevent user TOM from adding and deleting data in table TAB1?（）

• A、REVOKE ADD, DELETE FROM USER tom ON TABLE tab1
• B、REVOKE ADD, DELETE ON TABLE tab1 FROM USER tom
• C、REVOKE INSERT, DELETE FROM USER tom ON TABLE tab1
• D、REVOKE INSERT, DELETE ON TABLE tab1 FROM USER tom

第15题：

Which of the following statements allows USER1 to take away read access on the table ORG.TAB1 from USER2?（）

• A、REVOKE SELECT FROM user2 ON TABLE org.tab1
• B、REVOKE SELECT ON TABLE org.tab1 FROM user2
• C、REVOKE READ ACCESS FROM user2 ON TABLE org.tab1
• D、REVOKE READ ACCESS ON TABLE org.tab1 FROM user2

第16题：

Assuming PUBLIC has been granted all privileges on table T1, which of the following statements would continue to permit any user to add rows to table T1, but not remove them?（）

• A、REVOKE DROP ON t1 FROM PUBLIC
• B、REVOKE UPDATE ON t1 FROM PUBLIC
• C、REVOKE DELETE ON t1 FROM PUBLIC
• D、REVOKE CONTROL ON t1 FROM PUBLIC

第17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18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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