Question

What is the primary function of data extraction in a data warehouse?

a.

To permanently store data from source applications

b.

To transport extracted files between platforms

c.

To generate common application codes for data extraction

d.

To create intermediary files to store selected data for merging

Posted under Data Warehousing and OLAP

Answer: (a).To permanently store data from source applications Explanation:The primary function of data extraction in a data warehouse is to select data sources from operational systems and store the data temporarily for further processing and storage.

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