单选题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

第1题：

If you create your database using Oracle Managed Files （OMF）， what is true？（）

• A、You must use Oracle predefined names to identify raw partitions that will hold OMF structures. 
• B、You must define directories for two online redo log groups and three copies of the control file. 
• C、If your CREATE DATABASE command fails, any OMF database files that have already been created will be dropped automatically. 
• D、You must use only OMF data files when adding new tablespaces or data files to your database in the future.

第2题：

You are using flat files as the data source for one of your data warehousing applications. To optimizethe application performance， you plan to move the data from the flat files toclustered tablesin an Oracle database.  While migrating the data， you want to have minimal impact on the database performance and optimize thedata load operation. Which method would you use to load data into the Oracle database（）

• A、Use the external table population.
• B、Use the Oracle Data Pump export and import utility.
• C、Use the conventional path data load of the SQL*Loader utility.
• D、Use the INSERT INTO...SELECT command to load the data.

第3题：

You plan to move data from a flat file to a table in your database. You decide to use SQL*Loader direct pathload method to perform this task. The table in which you plan to load data is an important table having variousintegrity constraints defined on it.  Which constraints will remain enabled by default during this operation（）

• A、CHECK
• B、UNIQUE
• C、NOT NULL
• D、PRIMARY KEY
• E、FOREIGN KEY

第4题：

You have a large amount of historical data in an operating system file. Some analysts in your organization need to query this data. The file is too large to load into your current database. Which is the most effective method to accomplish the task？（）

• A、Upgrade the hardware/memory to accommodate the data.
• B、Load the data into your database by using the PARALLEL clause.
• C、Give analysts DBA privilege， so that they can query DBA_EXTERNAL_TABLES.
• D、Use an external table so you can have the metadata available in your database， but leave the data in the operating system files.

第5题：

ou have a large amount of historical data in a flat file. Some analysts in your organization need to query thisdata in the file. The file is too large to load the data in it into your current database.  Which is the most effectivemethod to access this data in your database（）

• A、Use the database link.
• B、Use the SQL*Loader utility.
• C、Use the Oracle Data Pump utility.
• D、Create an external table and leave the data in the flat file

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第13题：

You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database.  Which method would you use to recover the data file？（）

• A、Restore all the data files and open the database
• B、Create the data file and performtablespacerecovery
• C、No need to restore any file， just recover the database
• D、Restore only the system data file and recover the database
• E、Restore only lost date file and performtablespacerecovery

第14题：

A data file become corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file. Which method would you use for recovery？（）

• A、 Flash back all the tables in the data file， one by one.
• B、 Restore the data file to a new location and perform a media recovery.
• C、 Flash back the database， there is no need to restore the data file.
• D、 Restore the data file from the most recent backup and flash the database.

第15题：

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？（）

• A、use the external table population
• B、use the Oracle Data Pump export and import utility
• C、use the conventional path data load of SQL*Loader utility
• D、use the direct path data load of Oracle export and import utility

第16题：

In Recovery Manager (RMAN), you are taking image copies of the data files of your production database and rolling them forward at regular intervals. You attempt to restart your database. After a regular maintenance task, you realize that one of the data files that belongs to the USERS tablespace is damaged and you need to recover the data file by using the image copy. Because a media failure caused the data file to be damaged, you want to place the data file in a different location while restoring the file. Which option must you consider for this task?（）

• A、using only the RMAN SWITCH command to set the new location for the data file
• B、placing the database in the MOUNT state for the restore and recovery operations.
• C、using an RMAN RUN block with the SET NEWNAME and then the SWITCH command.
• D、configuring two channels: one for the restore operation and the other for the recovery operation

第17题：

You administer a SQL Server 2008 instance. You plan to deploy a new database to the instance. The database will be subject to frequent inserts and updates. The database will have multiple schemas. One of the schemas will contain a large amount of read-only reference data. You need to design the physical database structure for optimal backup performance. What should you do?（） 

• A、Create the database by using a single data file and a single log file.
• B、Create the database by using a single data file and multiple log files.
• C、Create the database by using a single log file and multiple filegroups.
• D、Create the database by using a single log file and a filegroup that has multiple data files.

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