DP-900 - Describe Core Data Concepts - Section 1.1
Describe ways to represent data including structured, semi-structured, and unstructured formats.
Distinguish structured data (fixed schema, rows and columns), semi-structured data (flexible tags such as JSON and XML), and unstructured data (free text, images, video). Recognise that schema on write enforces structure at load time, while schema on read defers interpretation to query time.
structured datasemi-structured dataunstructured dataJSON XMLschema on read vs write
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