136. weak entity — scenario 2

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

What is a weak entity conceptually?

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Answer & Explanation

4 Answers

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Option A

A view with no query.

Additional Explanation

This option is incorrect for the stated requirement.

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Option B

An entity with no columns.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

A table without any rows.

Additional Explanation

This option is incorrect for the stated requirement.

Verified Correct Answer

Option D

An entity whose identification depends on an owner entity and an identifying relationship.

Additional Explanation

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