多选题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()ACHECKBUNIQUECNOT NULLDPRIMARY KEYEFOREIGN KEY
多选题
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
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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、CHECKB、UNIQUEC、NOT NULLD、PRIMARY KEYE、FOREIGN KEY
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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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多选题On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEES table in the HR schema by issuing the following command: $ sqlldr hr/hr@pdb table=employees Which two statements are true regarding the command?()AIt succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database.BIt fails because no SQL *Loader data file location is specified.CIt fails if the HR user does not have the CREATE ANY DIRECTORY privilege.DIt fails because no SQL *Loader control file location is specified.
单选题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.
多选题In which situations does the Oracle Data Pump use external tables and not the direct path load whileexporting a table()Aif a table is not in a clusterBif a table has an active triggerCif a table has an encryptedDif a table has a column of data type LONG defined on itEif a table has a referential integrity constraint defined on it
多选题On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEES table in the HR schema by issuing the following command: $ sqlldr hr/hr@pdb table=employees Which two statements are true regarding the command?()AIt succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database.BIt fails because no SQL *Loader data file location is specified.CIt fails if the HR user does not have the CREATE ANY DIRECTORY privilege.DIt fails because no SQL *Loader control file location is specified.
多选题Which two statements are true regarding the usage of the SQL*Loader utility()AYou can load data into multiple tables during the same load session.BYou can load data from multiple files to a table during the same load session.CYou cannot perform selective data loading based on the values available in the records.DYou can use an export file generated by the EXPDP utility as an input data file to load the data.EYou can load data only if the input file is available on the disk and tape but not in a named pipes.
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. 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?()Ause the external table populationBuse the Oracle Data Pump export and import utilityCuse the conventional path data load of SQL*Loader utilityDuse the direct path data load of Oracle export and import utility
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()AUse the database link.BUse the SQL*Loader utility.CUse the Oracle Data Pump utility.DCreate an external table and leave the data in the flat file
多选题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()ACHECKBUNIQUECNOT NULLDPRIMARY KEYEFOREIGN KEY