In this Python FastAPI tutorial, we'll be learning how to add a database to our FastAPI application using SQLAlchemy. Up until now, we've been storing our data in a Python list in memory, which resets every time the server restarts. We'll fix that by connecting to a real SQLite database and setting up SQLAlchemy models with relationships between users and posts. We'll also look at why we use separate SQLAlchemy models and Pydantic schemas, and how to use FastAPI's dependency injection to manage database sessions. By the end, you'll have a solid foundation for database-driven FastAPI applications that you can later scale up to Postgres or MySQL. Let's get started...
The code from this video can be found here:
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2026/01/14
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