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（） The command fails because SCOTT still has privileges.。 The command succeeds and privileges are revoked from JIM.。 The command fails because HR cannot revoke the privileges from JIM.。 The command succeeds and only HR has the privilege to perform the SELECT， INSERT， and UPDATEoperations on the EMP table.。
地理信息
Using the LIST command in Recovery Manager （RMAN），which two pieces of information in the RMAN repository can be listed？（） stored scripts in the recovery catalog。 backups that can be deleted from disk。 backup sets and image copies are obsolete。 backups that do not have the AVAILABLE status in the RMAN repository。
俾斯麦出任普鲁士首相后，推行“铁血政策”目的是（）。 使用武力巩固统治。 镇压人民革命运动。 扫清障碍实现统一。 维护维也纳体系。
You are using flat files as the data source for one of your data warehousing applications. You plan to move the data from the flat file structures to an Oracle database to optimize the application performance. In your database you have clustered tables. While migrating the data， you want to have minimal impact on the database performance and optimize the data load operation. Which method would you use to load data into Oracle database？（） use the external table population。 use the Oracle Data Pump export and import utility。 use the conventional path data load of SQL*Loader utility。 use the direct path data load of Oracle export and import utility。
充装气瓶时液化石油气喷在操作者身上，易造成（）。
