Flask-Migrate

About Flask-Migrate

Extension that handles SQLAlchemy database migrations for Flask applications using Alembic. Provides command-line tools to manage and automate database migrations in Flask projects.

Key Features

• 1Wraps Alembic to provide Flask CLI commands: `flask db init/migrate/upgrade`
• 2Auto-generates migrations by comparing SQLAlchemy models to live database
• 3Stores migration history in a `migrations/` directory under version control
• 4Supports multiple databases and bind configuration in Flask apps
• 5Rollback support via `flask db downgrade`

How Python Data Engineers Use Flask-Migrate

Flask-Migrate is used in Flask-based data applications to manage database schema changes alongside application code. When a SQLAlchemy model changes, engineers run `flask db migrate` to generate a migration script and `flask db upgrade` to apply it — keeping the database schema in sync with the application model in a Git-tracked, reviewable workflow.