DBS-C01 Workload-Specific Database Design Practice Question
A company is building a content management system that stores articles, images, and user comments. Articles are text-heavy and need full-text search. Images are binary files. Comments are relational with user IDs. Which TWO AWS services should be combined to best support this workload?
⚠ Common exam trap
Candidates often choose Amazon RDS for MySQL for both articles and comments, overlooking that full-text search in MySQL is less performant and scalable than OpenSearch for text-heavy workloads, and that S3 is the optimal service for binary files, not RDS.
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 OpenSearch Service for full-text search
Amazon OpenSearch Service is correct because it provides full-text search capabilities, which are essential for the text-heavy articles in the content management system. It supports advanced querying, stemming, and relevance scoring, making it ideal for searching article content. Amazon S3 is correct because it is designed for storing binary files like images, offering high durability, scalability, and cost-effectiveness for object storage.
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 for caching
Why it's wrong here
Not a primary data store.
- ✗
Amazon DynamoDB for articles and comments
Why it's wrong here
No native full-text search.
- ✓
Amazon OpenSearch Service for full-text search
Why this is correct
Provides powerful search capabilities.
- ✗
Amazon RDS for MySQL for articles and comments
Why it's wrong here
Can store but not optimal for search and binary.
- ✓
Amazon S3 for images
Why this is correct
Scalable object storage for binary files.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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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.