多項(xiàng)選擇題

Which two operations can be performed on an external table（）

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.

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單項(xiàng)選擇題

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

多項(xiàng)選擇題

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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Which two operations can be performed on an external table（）

你可能感興趣的試題

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（）

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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（）