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
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.
A