【单选题】
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. <br /> 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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