DS0-001 Data Querying And Analysis Practice Question
When creating an ETL pipeline, which stage involves validating that the data meets business rules (e.g., age must be positive)?
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
✓
Transformation
Data validation or quality checks occur during the transformation phase to ensure data integrity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Extraction
Why it's wrong here
Extraction moves data from the source.
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Loading
Why it's wrong here
Loading is the final step into the destination.
- ✗
Reporting
Why it's wrong here
Reporting occurs after the pipeline is complete.
- ✓
Transformation
Why this is correct
Transformation is where data is cleaned and validated.
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.