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FC0-U71 Practice Question: A database designer wants to avoid duplicate data…
A database designer wants to avoid duplicate data across tables and ensure each table stores information about a single entity. Which process should the designer apply?
⚠ Common exam trap
It's easy for candidates to confuse normalization with indexing, assuming both reduce redundancy, but indexing only optimizes query speed without addressing data duplication or entity isolation.
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
✓
Normalization
Normalization is the process of organizing data in a database to reduce redundancy and dependency by dividing large tables into smaller, related tables and defining relationships between them. This ensures each table stores information about a single entity and avoids duplicate data across tables, aligning with the designer's goal.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Indexing
Why it's wrong here
Indexing speeds up queries but does not reduce data duplication.
- ✗
Transaction isolation
Why it's wrong here
Transaction isolation controls concurrency, not data redundancy.
- ✓
Normalization
Why this is correct
Normalization minimizes duplication by splitting data into related tables.
- ✗
Backup and recovery
Why it's wrong here
Backup protects against data loss, not duplication.
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About these practice questions
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Same concept, more angles
1 more way this is tested on FC0-U71
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A database designer wants to reduce data redundancy and avoid update anomalies. Which process should be applied?
medium- A.Denormalization
- ✓ B.Normalization
- C.Encryption
- D.Indexing
Why B: Normalization is the process of organizing data to minimize redundancy and dependency, typically by dividing tables and establishing relationships.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 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 FC0-U71 exam.