DA0-002 Data Concepts and Environments Practice Question
An analyst is reviewing a table that stores customer orders. The table contains columns: OrderID, CustomerName, Product1, Product1Qty, Product2, Product2Qty. This design violates which normal form?
⚠ Common exam trap
Many candidates think the table is already in 1NF because it has a primary key (OrderID), but they overlook the repeating group columns that violate the atomicity requirement of 1NF.
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
✓
First normal form (1NF)
The table violates First Normal Form (1NF) because it contains repeating groups (Product1, Product1Qty, Product2, Product2Qty) instead of storing each product in a separate row. 1NF requires that each column contains atomic values and that there are no repeating groups or arrays. The presence of multiple product columns for a single order breaks this atomicity and normalization rule.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
No violation
Why it's wrong here
The design violates 1NF.
- ✗
Third normal form (3NF)
Why it's wrong here
3NF is about transitive dependencies.
- ✗
Second normal form (2NF)
Why it's wrong here
2NF is about partial dependencies, but 1NF is violated first.
- ✓
First normal form (1NF)
Why this is correct
Repeating groups violate 1NF.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 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 DA0-002 exam.