The correct answer is to migrate to a relational database with normalized tables and foreign key constraints. This directly addresses the bookstore’s data quality issues because database normalization benefits data quality by splitting data into separate, related tables—such as Books, Sales, and Customers—which eliminates the redundancy of storing the same book or customer multiple times. Foreign key constraints then enforce referential integrity, ensuring that every sale references an existing book and that customer data is stored only once, preventing the orphan records and price inconsistencies seen in the flat spreadsheet. On the CompTIA ITF+ FC0-U61 exam, this scenario tests your understanding of how normalization and constraints solve real-world data anomalies; a common trap is to choose a simpler fix like adding validation rules to the spreadsheet, which fails to address structural redundancy. Remember the memory tip: “One fact, one place” — normalization ensures each piece of data lives in exactly one table, linked by keys, so you never chase duplicates again.
FC0-U61 Database Fundamentals Practice Question
This FC0-U61 practice question tests your understanding of database fundamentals. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A small independent bookstore has been operating for several years using a single Microsoft Excel spreadsheet to manage its inventory, sales, and customer data. The spreadsheet contains over 10,000 rows and is shared among five employees. Recently, employees have noticed recurring data quality issues: the same book appears multiple times in the inventory list with different prices, some sales records reference book titles that do not exist in the inventory, and customer contact information is duplicated across rows. Because there are no constraints, employees can enter any value into any cell. The owner wants to implement a more robust system to eliminate data redundancy and ensure data integrity. The bookstore has a budget for new software and some technical support. The owner is not very technical but is willing to hire a consultant. Which action should be taken to best address these problems?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Migrate to a relational database with normalized tables and foreign key constraints
Option C is correct because migrating to a relational database with normalized tables and foreign key constraints directly addresses the data redundancy and integrity issues. Normalization splits data into separate tables (e.g., Books, Sales, Customers) to eliminate duplicate entries, while foreign key constraints ensure that every sales record references a valid book and that customer data is stored once. This approach enforces referential integrity and prevents the anomalies seen in the flat spreadsheet.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use a single flat file for all data to simplify data entry
Why it's wrong here
A flat file would increase redundancy and integrity issues.
✗
Implement a NoSQL database for flexibility
Why it's wrong here
NoSQL is overkill and may not enforce the needed integrity.
✓
Migrate to a relational database with normalized tables and foreign key constraints
Why this is correct
Normalization reduces redundancy, and foreign keys enforce referential integrity.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Continue using the spreadsheet but add data validation rules to restrict input
Why it's wrong here
Validation rules can be bypassed and do not eliminate existing duplicates.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose data validation (Option D) thinking it can enforce integrity, but they overlook that spreadsheets lack relational constraints and cannot prevent duplicate rows or cross-table inconsistencies across multiple users.
Detailed technical explanation
How to think about this question
Normalization in a relational database (e.g., MySQL, PostgreSQL) typically involves decomposing the spreadsheet into at least three tables: Books (with a unique ISBN as primary key), Sales (with a foreign key referencing Books.ISBN), and Customers (with a unique customer ID). Foreign key constraints enforce that any Sales record must have a matching Book entry, preventing orphan records. Under the hood, the database engine uses indexes and locking to maintain consistency even with concurrent access by five employees, which a flat file cannot guarantee.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Database Fundamentals — This question tests Database Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Migrate to a relational database with normalized tables and foreign key constraints — Option C is correct because migrating to a relational database with normalized tables and foreign key constraints directly addresses the data redundancy and integrity issues. Normalization splits data into separate tables (e.g., Books, Sales, Customers) to eliminate duplicate entries, while foreign key constraints ensure that every sales record references a valid book and that customer data is stored once. This approach enforces referential integrity and prevents the anomalies seen in the flat spreadsheet.
What should I do if I get this FC0-U61 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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. Which THREE of the following are best practices for database normalization? (Choose three.)
medium
A.Use composite primary keys excessively
✓ B.Eliminate redundant data
✓ C.Ensure data dependencies make sense
✓ D.Reduce update anomalies
E.Create separate tables for each attribute
Why B: Eliminating redundant data is a core goal of database normalization because it reduces storage requirements and prevents data inconsistencies. By ensuring each piece of data is stored in only one place, you avoid update anomalies that occur when the same fact is recorded in multiple rows or tables. This practice directly supports the second normal form (2NF) and third normal form (3NF) objectives of removing partial and transitive dependencies.
Last reviewed: Jun 25, 2026
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This FC0-U61 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-U61 exam.
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