39. SQL injection

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

What is the primary defense against SQL injection in application code?

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Answer & Explanation

4 Answers

Verified Correct Answer

Option A

Use parameterized/prepared statements and avoid constructing SQL by concatenating untrusted input.

Additional Explanation

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

Verified

Option B

Give every user DBA privileges.

Additional Explanation

This option is incorrect for the stated requirement.

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Option C

Escape only the SELECT keyword.

Additional Explanation

This option is incorrect for the stated requirement.

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Option D

Disable all indexes.

Additional Explanation

This option is incorrect for the stated requirement.