You want to access employee details contained in flat files as part of the EMPLOYEE table. You plan to add anew column to the EMPLOYEE table to achieve this. 
Which data type would you use for the new column（）

单项选择题Note the following functionalities of various background processes： 1. Record the checkpoint information in data file headers. 2. Perform recovery at instance startup. 3. Cleanup unused temporary segments. 4. Free the resources used by a user process when it fails. 5. Dynamically register database services with listeners. 6. Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process（）

A.Archiver Process （ARCn）： 1， 2， 5
B.System Monitor Process （SMON）： 1， 4， 5
C.Process Monitor Process （PMON）： 4， 5， 6
D.Database Writer Process （DBWn）： 1， 3， 4

单项选择题You are using Enterprise Manager to schedule backups for your database.  Which type of script would begenerated by the backup scheduler（）

A.XML script
B.PL/SQL script
C.Operating system scriptThis document was downloaded from =>> http：//www.amaderforum.com
D.Recovery Manager （RMAN） script

单项选择题in your database instance， the STATISTICS_LEVEL initialization parameter is set to BASIC.  What is the impactof this setting（）

A.Optimizer statistics are collected automatically.
B.Only timed operating system （OS） statistics and plan execution statistics are collected.
C.The snapshots for the Automatic Workload Repository （AWR） are not generated automatically.
D.Snapshots cannot be collected manually by using the DBMS_WORKLOAD_REPOSITORY package.
E.The Oracle server dynamically generates the necessary statistics on tables as part of query optimization.

单项选择题You execute the following command to audit database activities： SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL； What is the effect of this command（）

A.One audit record is created for every successful DROP TABLE command executed in the session of SCOTT.
B.One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to otherusers.
C.One audit record is created for the whole session if user SCOTT successfully drops one or more tables inhis session.
D.One audit record is created for every session of any other user in which a table owned by SCOTT isdropped successfully.
E.One audit record is created for every successful DROP TABLE command executed by any user to drop Tables owned by SCOTT

单项选择题Which statements listed below describe the data dictionary views（） 1） These are stored in the SYSTEM tablespace. 2） These are the based on the virtual tables. 3） These are owned by the SYS user. 4） These can be queried by a normal user only if O7_DICTIONARY_ACCESSIBILTY parameter is set to TRUE. 5） The V$FIXED_TABLE view can be queried to list the names of these views.

A.1 and 3
B.2， 3， and 5
C.1， 2， and 3
D.2， 3， 4， and 5