DBS-C01 Workload-Specific Database Design Practice Question
A company is designing a database for an e-commerce application that needs to store product catalog data. The data is highly structured with relationships between products, categories, and suppliers. The application requires ACID transactions to maintain data integrity when updating inventory. The company expects moderate read and write traffic. Which AWS database service is MOST suitable for this workload?
⚠ Common exam trap
The trap here is that candidates often pick Amazon DynamoDB for its scalability and performance, but overlook the requirement for ACID transactions and relational joins, which DynamoDB handles poorly compared to a traditional RDBMS like MySQL.
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
✓
Amazon RDS for MySQL
Amazon RDS for MySQL is the most suitable choice because it provides a fully managed relational database that supports ACID transactions, which are essential for maintaining data integrity during inventory updates. The highly structured nature of product catalog data with relationships between products, categories, and suppliers maps naturally to MySQL's relational model with foreign keys and joins. RDS for MySQL handles moderate read/write traffic efficiently and offers features like Multi-AZ for high availability and read replicas for scaling reads.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon ElastiCache for Redis
Why it's wrong here
ElastiCache is a caching service, not a durable database for ACID transactions.
- ✗
Amazon Neptune
Why it's wrong here
Neptune is a graph database, which is overkill for simple relational data.
- ✓
Amazon RDS for MySQL
Why this is correct
RDS for MySQL provides full ACID compliance and supports relational data structures.
- ✗
Amazon DynamoDB
Why it's wrong here
DynamoDB is NoSQL and does not natively support complex joins and ACID transactions across multiple items.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services 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 DBS-C01 exam.