DS0-001 Database Planning And Deployment Practice Question
During database testing, a developer finds that a specific query is performing poorly due to a lack of statistics. What action should be taken to update the database optimizer's knowledge of the table data distribution?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update statistics
Updating statistics (e.g., ANALYZE TABLE or UPDATE STATISTICS) provides the query optimizer with the necessary information to choose the most efficient execution plan.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Update statistics
Why this is correct
Updating statistics allows the query planner to make informed decisions about join types and access paths.
- ✗
Run a database consistency check (DBCC)
Why it's wrong here
DBCC is used to detect corruption, not to update optimizer statistics.
- ✗
Clear the plan cache
Why it's wrong here
Clearing the cache forces a recompile but does not fix inaccurate distribution statistics.
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Rebuild the table indexes
Why it's wrong here
Rebuilding indexes improves fragmentation but doesn't necessarily update distribution statistics.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CompTIA exam blueprint
This DS0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DS0-001 exam.