In which situations does the Oracle Data Pump use external tables and not the direct path load whileexporting a table（）

多项选择题WhichtwostatementsaretrueregardingOracleDataPump（）

A.EXPDP and IMPDP are the client components of Oracle Data Pump.
B.DBMS_DATAPUMP PL/SQL packages can be used independently of the Data Pump clients.
C.Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege.
D.Oracle Data Pump imports can be done from the export files generated in the export utility of previous versions.
E.EXPDP and IMPDP use the procedures provided by DBMS_METADATA to execute export and import commands.

多项选择题WhichtwostatementsaretrueregardingtheusageoftheSQL*Loaderutility（）

A.You can load data into multiple tables during the same load session.
B.You can load data from multiple files to a table during the same load session.
C.You cannot perform selective data loading based on the values available in the records.
D.You can use an export file generated by the EXPDP utility as an input data file to load the data.
E.You can load data only if the input file is available on the disk and tape but not in a named pipes.

单项选择题WhichstatementistrueaboutloadingdatausingtheconventionalpathofSQL*Loader（）

A.Redo is not generated while performing conventional path loads.
B.Only PRIMARY KEY， UNIQUE KEY， and NOT NULL constraints are checked.
C.No exclusive locks are acquired when the conventional path loads are performed.
D.Instead of performing transactions， SQL*Loader directly writes data blocks to the data files.
E.INSERT triggers are disabled before the conventional path load and reenabled at the end of the load.

多项选择题Whichtwooperationscanbeperformedonanexternaltable（）

A.Create a view on the table.
B.Create an index on the table.
C.Create a synonym on the table.
D.Add a virtual column to the table.
E.Update the table using the UPDATE statement.
F.Delete rows in the table using the DELETE command.

单项选择题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