Discussion
Business Intelligence (BI) reporting systems cannot do which of the following operations?
Answer: C
Correct answer: Modify data
A reporting system reads: it filters, sorts, groups and calculates, and it delivers the result. It does not write back to the source, and it must not, since the data it reads belongs to operational systems whose integrity depends on transactions rather than on reports. Filtering and grouping are exactly what it does do.
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