DBS-C01 Workload-Specific Database Design Practice Question
A company wants to run a graph database for a social network application. The data model involves users, posts, comments, and likes, with many-to-many relationships. Which AWS database service is most appropriate?
⚠ Common exam trap
Candidates often choose Amazon DynamoDB for its scalability, overlooking that graph traversal queries require multiple round-trips or inefficient scan operations, whereas Neptune provides native graph traversal with single-query efficiency.
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 Neptune
Amazon Neptune is purpose-built for highly connected data, supporting property graph and RDF models with SPARQL and Gremlin/TinkerPop query languages. For a social network with users, posts, comments, and likes forming many-to-many relationships, Neptune efficiently traverses these connections using graph traversal algorithms, avoiding the expensive JOINs or denormalization required by other database 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.
- ✗
Amazon RDS for PostgreSQL
Why it's wrong here
PostgreSQL can model graphs with extensions but is not optimized for graph queries.
- ✓
Amazon Neptune
Why this is correct
Neptune is purpose-built for graph databases and efficiently handles complex relationships.
- ✗
Amazon DocumentDB
Why it's wrong here
DocumentDB is a document database, not a graph database.
- ✗
Amazon DynamoDB
Why it's wrong here
DynamoDB is key-value, not optimized for graph traversals.
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JA
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.