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Which of the following is the MOST critical and contributes the greatest to the quality of data in a data ware

Which of the following is the MOST critical and contributes the greatest to the quality of data in a
data warehouse?

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A.
Accuracy of the source data

B.
Credibility of the data source

C.
Accuracy of the extraction process

D.
Accuracy of the data transformation

Explanation:

Accuracy of source data is a prerequisite for the quality of the data in a data warehouse. Credibility
of the data source, accurate extraction processes and accurate transformation routines are all
important, but would not change inaccurate data intoquality (accurate) data.


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