CISA Certified Information Systems Auditor – Question2920 - CISA Certified Information Systems Auditor

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

A. Accuracy of the source data
B. Credibility of the data source
C. Accuracy of the extraction process
D. Accuracy of the data transformation

Correct Answer: A

Explanation:

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 into quality
(accurate) data.