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Question

How do event-driven methods differ from sampling methods in data warehouse monitoring?

a.

Event-driven methods record statistics at regular intervals.

b.

Event-driven methods have minimal impact on system overhead.

c.

Event-driven methods record statistics only when specified events occur.

d.

Event-driven methods are less thorough than sampling methods.

Answer: (c).Event-driven methods record statistics only when specified events occur. Explanation:Event-driven methods record statistics only when specified events occur, providing a more thorough but potentially higher system overhead approach.

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Q. How do event-driven methods differ from sampling methods in data warehouse monitoring?

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