The correct answer is a design using two tables: Orders and OrderItems, linked by an OrderID foreign key. This is the most appropriate choice because it establishes a one-to-many relationship database design, where a single order record can be associated with multiple item records without duplicating order-level data. By separating order details from item details, the design eliminates data redundancy and prevents update anomalies, ensuring referential integrity through the foreign key constraint. On the CompTIA ITF+ FC0-U61 exam, this scenario tests your understanding of normalization and relational database fundamentals—a common trap is choosing a single table that repeats order information for each item, which violates first normal form. A useful memory tip: think of a shopping cart—one cart holds many products, so you need a separate list for the items, linked by the cart’s ID.
FC0-U61 Database Fundamentals Practice Question
This FC0-U61 practice question tests your understanding of database fundamentals. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 company needs to store customer orders, where each order can contain multiple items. Which database design is most appropriate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Two tables: Orders and OrderItems, linked by an OrderID foreign key.
Option B is correct because it uses a normalized relational design with two tables: Orders (holding order-level data) and OrderItems (holding individual item details per order). The OrderID foreign key in OrderItems creates a one-to-many relationship, allowing each order to contain multiple items without data redundancy or update anomalies. This design ensures referential integrity and efficient querying, which is the standard approach for transactional order systems.
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.
✗
Three tables: Orders, Customers, and Items, with no direct link.
Why it's wrong here
Item details are not needed; the core relationship is order-to-items.
✓
Two tables: Orders and OrderItems, linked by an OrderID foreign key.
Why this is correct
This normalized design efficiently handles one-to-many relationships.
Related concept
Read the scenario before looking for a memorised answer.
✗
A single table storing all data in a JSON column.
Why it's wrong here
While possible, relational database design typically uses separate tables for normalization.
✗
A single table with columns for order details and repeated item information.
Why it's wrong here
This leads to data redundancy and update anomalies.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose Option D (single table with repeated columns) because it seems simpler, but they overlook the violation of first normal form and the practical limitations of fixed-width schemas for variable-length data.
Detailed technical explanation
How to think about this question
Under the hood, the foreign key constraint in the OrderItems table enforces referential integrity at the database engine level, preventing orphaned records and ensuring that every OrderID in OrderItems exists in the Orders table. In a real-world scenario, this design also supports efficient indexing on OrderID for fast retrieval of all items in an order, and avoids the complexity of parsing JSON or handling variable-length columns. The normalized structure aligns with Codd's rules for relational databases, specifically the requirement that each column contains atomic values and that relationships are represented through keys.
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 practitioner preparing for the FC0-U61 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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: Two tables: Orders and OrderItems, linked by an OrderID foreign key. — Option B is correct because it uses a normalized relational design with two tables: Orders (holding order-level data) and OrderItems (holding individual item details per order). The OrderID foreign key in OrderItems creates a one-to-many relationship, allowing each order to contain multiple items without data redundancy or update anomalies. This design ensures referential integrity and efficient querying, which is the standard approach for transactional order systems.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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