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Question

How does vertical parallelism differ from horizontal parallelism in database processing?

a.

It focuses on data partitioning across multiple disks.

b.

It executes all query operations in parallel.

c.

It decomposes a query into subtasks and executes them in serial fashion.

d.

It avoids the wait times associated with data access.

Answer: (c).It decomposes a query into subtasks and executes them in serial fashion. Explanation:Vertical parallelism decomposes a query into subtasks, and each subtask contains all the operations (e.g., index read, data read, join, and sort). These subtasks are executed in serial fashion, with data processed by one step and then passed to the next step, avoiding data wait times.

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Q. How does vertical parallelism differ from horizontal parallelism in database processing?

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