Discussion
The fact that information in the data warehouse changes far less often and may be regarded as non-real-time with periodic updating; This implies that data warehouses are _______
Answer: B
Correct answer: Non - Volatile
A data warehouse is loaded periodically and then read; existing data is not overwritten by day-to-day transactions. That is what non-volatile means here, and it is what allows historical comparisons that an operational database cannot support.
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