DA0-002 Data Concepts and Environments Practice Question
A company needs to store data that is highly interconnected, such as social network relationships. Which two database types are best suited for this? (Select TWO.)
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
✓
Document store (e.g., MongoDB)
Graph databases excel at storing relationships, and NoSQL databases support flexible schemas for interconnected data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Relational database
Why it's wrong here
Relational databases can model relationships but not as efficiently for complex networks.
- ✗
Wide-column store (e.g., Cassandra)
Why it's wrong here
Wide-column stores are for large-scale analytics, not relationships.
- ✓
Document store (e.g., MongoDB)
Why this is correct
Document stores can embed related data and are flexible for interconnected data.
- ✓
Graph database (e.g., Neo4j)
Why this is correct
Graph databases are designed for relationships.
- ✗
Key-value store (e.g., Redis)
Why it's wrong here
Key-value stores are simple and not ideal for relationships.
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This DA0-002 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 DA0-002 exam.