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Sequence 140 — T10 - JSON objects, arrays and nesting
Context: Technology Gate B - Programmatic Data Management | Technology Gate
Source: CDMP Master Execution Manual
When / purpose
Read service-style structured data at practical depth.
What you should learn
- Object vs array.
- Nested structures.
- Keys and missing fields.
- Flattening awareness.
Resources / limits
Technology Competency Roadmap: active T6–T10 only. Detailed Technology Competency Reference: topic detail/readiness only.
Do this in order
- Inspect customers_service.json.
- Trace one record and nested field.
- Read it in Python/pandas at a basic level.
- Explain what information could be lost by careless flattening.
Meridian application
Use Meridian synthetic files and database only for bounded practice.
Create / save
JSON structure sketch.
Stop / boundary
Stop before production data engineering, application development, advanced OOP, orchestration or distributed processing.
Completion gate
You can describe the shape of a JSON source and how it differs from CSV.
NEXT → Sequence 141
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