DA0-002 Data Concepts and Environments Practice Question
Which TWO of the following are considered structured data?
⚠ Common exam trap
The trap here is that candidates often mistake semi-structured data (like JSON) for structured data because it has key-value pairs, but the DA0-001 exam strictly defines structured data as having a fixed, predefined schema—typically found in relational databases or CSV files with consistent column headers.
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
✓
A relational database table
A relational database table stores data in a predefined schema of rows and columns, where each column has a fixed data type. This rigid structure allows for efficient querying, indexing, and relational operations, making it a classic example of structured 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.
- ✗
A PDF report with free-form text
Why it's wrong here
PDF text is often unstructured.
- ✓
A relational database table
Why this is correct
Tables have a fixed schema.
- ✗
A JPEG image of a product
Why it's wrong here
Image is unstructured.
- ✗
A JSON file with nested key-value pairs
Why it's wrong here
JSON is semi-structured.
- ✓
A CSV file containing sales records
Why this is correct
CSV has rows and columns.
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