Multiple choice technology databases

What best describes the relationship between indexes and SQL performance?

  1. Indexes are only used in special cases

  2. Indexes are used to make table storage more efficient

  3. Indexes rarely make a difference in SQL performance

  4. Indexes exist solely to improve query speed.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Indexes exist specifically to accelerate data retrieval by providing optimized lookup paths. While indexes do consume storage (B), they are not for storage efficiency. They are widely used (contrary to A and C) and their primary purpose is query performance improvement.

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