DA0-002 Data Concepts and Environments Practice Question
Which of the following is a characteristic of structured data?
⚠ Common exam trap
Many exam-takers confuse semi-structured data (which has some organizational tags but no fixed schema) with structured data, leading them to select Option B, or they mistakenly think SQL cannot analyze structured data, falling for Option C.
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
✓
It conforms to a fixed schema with rows and columns.
Structured data is defined by its adherence to a fixed schema, typically organized into rows and columns within relational databases. This rigid structure enables efficient querying and manipulation using SQL, as each field has a predefined data type and constraints. The correct answer highlights this fundamental characteristic, which distinguishes structured data from semi-structured or unstructured formats.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
It conforms to a fixed schema with rows and columns.
Why this is correct
Correct definition of structured data.
- ✗
It has a flexible schema that can vary per record.
Why it's wrong here
Flexible schema describes semi-structured data like JSON or XML.
- ✗
It cannot be analyzed using SQL.
Why it's wrong here
Structured data is often queried using SQL.
- ✗
It is stored as blobs in a data lake.
Why it's wrong here
Blobs are used for unstructured data such as images or videos.
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