（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
正确答案
答案解析
略
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