Question
Which of the following is the MOST critical and contributes the MOST 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
Answers
Answer: A

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




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