FC0-U71 Data and Database Fundamentals Practice Question
Which THREE of the following are types of data integrity enforced in relational databases?
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
✓
Referential integrity
Entity integrity (via primary keys), referential integrity (via foreign keys), and domain integrity (via data types and constraints) are the three main types.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Referential integrity
Why this is correct
Ensures foreign key values match a primary key or are null.
- ✓
Entity integrity
Why this is correct
Ensures each row has a unique primary key.
- ✗
Network integrity
Why it's wrong here
Not a standard database integrity type.
- ✗
File integrity
Why it's wrong here
File integrity relates to file systems, not database integrity.
- ✓
Domain integrity
Why this is correct
Ensures data values fall within defined domains (e.g., data type, range).
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