36. sharding

DBMS Published 30 Sept 2026 Updated 30 Sept 2026 0 Views Verified

What is sharding?

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Answer & Explanation

4 Answers

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Option A

It is the same as a backup.

Additional Explanation

This option is incorrect for the stated requirement.

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Option B

It converts SQL to JSON.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

It adds a NOT NULL constraint.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option D

Sharding distributes subsets of data across multiple database nodes or partitions according to a shard key.

Additional Explanation

Correct implementation. Prefer parameterized queries in application code, validate affected rows for UPDATE/DELETE, and use transactions for related writes.