DS0-001 Data Querying And Analysis Practice Question
Which of the following is a limitation of the 'Star Schema' design compared to a fully normalized schema?
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
✓
Increased data redundancy
Star schemas increase redundancy by duplicating attributes in dimension tables, which can lead to larger storage footprints.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Inability to store large data volumes
Why it's wrong here
They are specifically designed to handle large datasets.
- ✗
Slower query performance
Why it's wrong here
Star schemas are generally faster for read-heavy reporting.
- ✓
Increased data redundancy
Why this is correct
Denormalization in dimensions introduces redundancy.
- ✗
Difficulty in writing joins
Why it's wrong here
Star schemas simplify joins by design.
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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
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