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Database Processing for BIS Questions and Answers

41.

The reports generated by a reporting system are usually not delivered in which of the following media?

Answer: B

Correct answer: Commercial courier service

Reports are delivered electronically: to a web portal, to a digital dashboard, by e-mail, or through XML web services. A courier delivers physical objects, and a system whose value lies in timeliness would be undone by physical delivery. The delivery mode is part of the report’s design, and it is chosen to reach the right people quickly.

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42.

Most operational databases can be used for many BI applications.

Answer: B

Correct answer: False

Operational data is generally poorly suited to BI without substantial preparation: it is dirty, has missing values, is spread across non-integrated sources, is too voluminous, and is granular in ways that do not match the analysis. That gap is exactly why data warehouses, with their extraction, cleaning and preparation programs, exist.

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