FC0-U71 Data and Database Fundamentals Practice Question
A database designer wants to reduce data redundancy in a relational database. Which THREE of the following are normalization techniques or concepts?
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
✓
Eliminating partial dependencies by moving attributes to appropriate tables
Normalization involves splitting tables to reduce redundancy. First normal form (1NF) eliminates repeating groups, second normal form (2NF) removes partial dependencies, and third normal form (3NF) removes transitive dependencies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Denormalization for performance
Why it's wrong here
Denormalization increases redundancy, opposite of normalization.
- ✓
Eliminating partial dependencies by moving attributes to appropriate tables
Why this is correct
This is part of achieving 2NF.
- ✓
Removing duplicate columns by creating separate tables
Why this is correct
This is a key normalization step, e.g., moving to 1NF.
- ✗
Using a single table to store all data
Why it's wrong here
A single table leads to redundancy, not normalization.
- ✓
Ensuring each table has a primary key
Why this is correct
Primary keys are essential for normalization and entity integrity.
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