Python → SQL Database: Complete Data Science Interview Workflow (SQLAlchemy + Pandas)

Published: 27 October 2025
on channel: Peetha Academy

#datascience #interviewpreparation #pandas

Master how to connect Python with SQL databases — a must-know workflow for data science, AI/ML and Python interview rounds.

In this video you’ll learn:
• How to import and use libraries like SQLAlchemy, psycopg2, pymysql
• How to create a connection engine (PostgreSQL, MySQL, SQLite)
• How to use pandas.read_sql() and to_sql() for seamless data flow
• Best practices: parameterised queries, exception handling, closing connections
• Real-world case: extracting 2 million customer records from PostgreSQL for segmentation

Who is this for?
• Aspiring data scientists, ML engineers & Python developers preparing for interviews
• Analysts who want to build automated pipelines from SQL to pandas
• Developers who need a quick end-to-end workflow (Python → SQL → DataFrame)

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