Surfalytics
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Data Engineering beginner ⏱ 4–6 hours

DB-to-DB Data Transfer with Python

Read data from a relational database into Pandas DataFrames and write it to another database — the foundation of every ETL pipeline.

PythonPandasSQLETL
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What you’ll build

A Python script that reads from a source database (PostgreSQL or SQLite), transforms with Pandas, and writes to a target database. Simple on the surface — but this pattern is the core of every ETL pipeline in production.

Skills you’ll practice

  • SQLAlchemy connections to relational databases
  • Pandas: reading SQL into DataFrames, chunked loading
  • Writing DataFrames back to SQL with to_sql
  • Handling schema differences between source and target

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