1. What Is Data Engineering (vs Data Science / Analytics)
1.3 India Retail Pipeline Story
Why. Stories stick better than jargon.
What / How — fictional Raja Traders pipeline
- Source: billing MySQL on a shop PC (OLTP).
- Land: nightly CSV drop to cloud storage (bronze-ish raw).
- Clean: Python or Spark job writes typed Parquet.
- Serve: Power BI reads a clean table; later ML reads features.
Fictional data
Retail tables and city names here are fictional teaching data. Not real company metrics.