DA0-002 Data Concepts and Environments Practice Question
An e-commerce company stores customer support emails in a text database, product images in a blob store, and sales transactions in a SQL table. Which data store holds only structured data?
⚠ Common exam trap
Candidates often confuse 'structured data' with any data that has some organization (like tags in a blob store or fields in a text document), but only a SQL table enforces a rigid, predefined schema with typed columns and relational constraints, which is the defining characteristic of structured data.
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
✓
SQL table
Structured data conforms to a predefined schema with rows and columns, enforcing data types and relationships. A SQL table is the canonical example of a structured data store because it organizes data into tables with fixed schemas, supports ACID transactions, and enables relational queries via SQL. In contrast, blob stores and text databases store unstructured or semi-structured data without a rigid schema.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Blob store
Why it's wrong here
Incorrect. Images are unstructured binary data.
- ✗
Text database
Why it's wrong here
Incorrect. Emails are unstructured text.
- ✓
SQL table
Why this is correct
Correct. SQL tables have rows and columns with defined data types.
- ✗
None
Why it's wrong here
Incorrect. The SQL table stores structured data.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.