JSON documents with varying fields per record — no fixed schema — are which data type?
A.Semi-structured — tags/keys organize data without a rigid schema
Flexible-schema JSON = semi-structured. Correct.
B.Structured — like a relational table
Structured requires rigid schema — JSON varies.
C.Unstructured — like video files
Unstructured has no organization — JSON has keys.
D.Binary data
Binary is a format — not the data-type answer.
Why this answer
Structured = schema-fixed tables; semi-structured = self-describing formats (JSON/XML/Parquet) with flexible fields; unstructured = no inherent organization (images, video, raw text). JSON is THE exam example of semi-structured.
Correct answer: A · Last reviewed 2026-11-05
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