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Question

How does a column store's data access during query processing differ from traditional row stores?

a.

Column stores access all data at once.

b.

Column stores access only the referenced data/columns during query processing.

c.

Column stores process full tuples one at a time.

d.

Column stores rely on random data access.

Posted under Big Data Computing

Answer: (b).Column stores access only the referenced data/columns during query processing. Explanation:In column stores, only the referenced data/columns are accessed during query processing, which is different from traditional row stores.

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Q. How does a column store's data access during query processing differ from traditional row stores?

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