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Question

What is a limitation of horizontal parallelism in database processing?

a.

It results in data wait times until all needed data is read.

b.

It requires advanced decomposition of tasks.

c.

It executes all component query operations in parallel.

d.

It avoids data wait times.

Answer: (a).It results in data wait times until all needed data is read. Explanation:Horizontal parallelism can result in data wait times because all necessary data must be read before the next task in the query can begin, leading to potential delays.

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Q. What is a limitation of horizontal parallelism in database processing?

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