单选题You have a large amount of historical data in a flat file. Some analysts in your organization need toquery this data in the file. The file is too large to load the data in it into your current database.  Which is the most effective method to access thi

题目
单选题
You have a large amount of historical data in a flat file. Some analysts in your organization need toquery this data in the file. The file is too large to load the data in it into your current database.  Which is the most effective method 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

如果没有搜索结果或未解决您的问题,请直接 联系老师 获取答案。
相似问题和答案

第1题:

You are using flat files as the data source for one of your data warehousing applications. To optimize the application performance, you plan to move the data from the flat files to clustered tables in an Oracle database.While migrating the data, you want to have minimal impact on the database performance and optimize the dataload 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

正确答案:C

第2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

正确答案:A

第3题:

You are the administrator of a Windows 2000 Server computer. A folder named HR-Data on the system partition of the server is shared on the network as HR-Data. The owner of the HR-Data folder is Administrators.

The shared permissions and NTFS permissions are shown in the following table.

Share permissions:

Everyone: FULL Control

NTFS permissions

Domain Admins: Read

Katrin: Full Control

Katrin creates a file in the HR-Data folder. She sets the NTFS permissions for the file to list only herself on the access control list, with Full Control permission. Katrin then leaves on vacation and cannot be contacted.

Later, you discover that the file contains sensitive information and must be removed from the server as soon as possible. You want to delete the file without modifying any of the permissions for other files in the HR-Data folder. You want your actions to have least possible impact on users who may be using other files in the HR-Data folder. You want to use the minimum amount of authority necessary to delete the file.

What should you do?

A.Grant yourself Full Control permission for only the HR-data folder and not its subobjects. Delete the file. Then remove Full Control permission for HR-Data folder.

B.Take ownership of the HR-Data folder. When prompted, take ownership of the existing files. Grant yourself Full Control permission for the file. Delete the file.

C.Take ownership of the file. Grant yourself Modify permission for the file. Delete the file.

D.Grant yourself Modify permission for the HR-Data folder and its subobjects. Delete the file. Then remove Modify permission for the HR-Data folder.


正确答案:C
解析:Explanation:Tobeabletodeletethefileauserwithadministrativerightshastotaketheownershipofthefileandthengrantthemselfenoughpermissiontodeleteit.Incorrectanswers:A:TheadministratorisnotlistedontheDACLofthefile.Tochangethepermissionsonthefile,wemustfirsttakeownershipofthefile.B:Weshouldonlytakeownershipofthefile,notthefolder.D:Weshouldonlychangethepermissionsofthefile,notthefolder.

第4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

正确答案:C

第5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.

正确答案:B

第6题:

You have a large amount of historical data in a flat file. Some analysts in your organization need toquery this data in the file. The file is too large to load the data in it into your current database.  Which is the most effective method 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

正确答案:D

第7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.

正确答案:C

第8题:

A data file became 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 back the database

正确答案:B

第9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

正确答案:B,C,D

第10题:

You plan to move data from a flat file to a table in your database. You decide to use SQL*Loader directpath load method to perform this task. The table in which you plan to load data is an important tablehaving various integrity 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

正确答案:B,C,D

更多相关问题