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Sequence 141 — T10 - Parquet concept and columnar awareness
Context: Technology Gate B - Programmatic Data Management | Technology Gate
Source: CDMP Master Execution Manual
When / purpose
Learn enough Parquet to recognize why later big-data/file work uses it.
What you should learn
- Columnar storage concept.
- Schema-bearing format awareness.
- Compression/efficient analytical reading at concept level.
- No distributed-engineering depth.
Resources / limits
Technology Competency Roadmap: active T6–T10 only. Detailed Technology Competency Reference: topic detail/readiness only.
Do this in order
- Read an overview from your chosen resource.
- Compare CSV vs Parquet in a short table.
- If a sample exists, read it with pandas/DuckDB later.
Meridian application
Use Meridian synthetic files and database only for bounded practice.
Create / save
Format comparison note.
Stop / boundary
Stop before production data engineering, application development, advanced OOP, orchestration or distributed processing.
Completion gate
You can explain why Parquet differs from CSV without discussing Spark internals.
NEXT → Sequence 142
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