When should I use Flyway instead of South?

Database migration management across polyglot teams using SQL-first versioned scripts. Enterprises needing a proven migration tool that works across many database engines. CI/CD pipelines where migrations run as a pre-deployment step in any language stack

When should I use South instead of Flyway?

Historical Django schema migrations for codebases running Django 1.6 or earlier. Maintaining very legacy Django projects that have not been upgraded in over a decade. Understanding Django migration history — South directly inspired the built-in migrations system

What are the main weaknesses of Flyway?

Java-based core; the Python CLI wrapper adds friction for pure Python teams. SQL-centric approach does not integrate with Python ORM schema definitions. Undo migrations and advanced features require the paid Teams or Enterprise edition

What are the main weaknesses of South?

Completely obsolete — Django's built-in migrations superseded South in Django 1.7 (2014). Not compatible with Django 2.x or any later version. No active maintenance or security updates; should be removed from any active codebase

Flyway vs South: Key Differences for Python Data Engineering

Database Migration Tools

Flyway

Database Migration Tool

★ 4.6

Apache-2.0 (Community)

pip install python-flyway

South

Legacy Django Migrations

★ 4.0

Apache-2.0

pip install South

Side-by-Side Comparison

Flyway

South

Flyway

South

Best For

✓Database migration management across polyglot teams using SQL-first versioned scripts
✓Enterprises needing a proven migration tool that works across many database engines
✓CI/CD pipelines where migrations run as a pre-deployment step in any language stack

✓Historical Django schema migrations for codebases running Django 1.6 or earlier
✓Maintaining very legacy Django projects that have not been upgraded in over a decade
✓Understanding Django migration history — South directly inspired the built-in migrations system

Best For

✓Database migration management across polyglot teams using SQL-first versioned scripts
✓Enterprises needing a proven migration tool that works across many database engines
✓CI/CD pipelines where migrations run as a pre-deployment step in any language stack

✓Historical Django schema migrations for codebases running Django 1.6 or earlier
✓Maintaining very legacy Django projects that have not been upgraded in over a decade
✓Understanding Django migration history — South directly inspired the built-in migrations system

Weaknesses

•Java-based core; the Python CLI wrapper adds friction for pure Python teams
•SQL-centric approach does not integrate with Python ORM schema definitions
•Undo migrations and advanced features require the paid Teams or Enterprise edition

•Completely obsolete — Django's built-in migrations superseded South in Django 1.7 (2014)
•Not compatible with Django 2.x or any later version
•No active maintenance or security updates; should be removed from any active codebase

Weaknesses

•Java-based core; the Python CLI wrapper adds friction for pure Python teams
•SQL-centric approach does not integrate with Python ORM schema definitions
•Undo migrations and advanced features require the paid Teams or Enterprise edition

•Completely obsolete — Django's built-in migrations superseded South in Django 1.7 (2014)
•Not compatible with Django 2.x or any later version
•No active maintenance or security updates; should be removed from any active codebase

License

Apache-2.0 (Community)

Apache-2.0

License

Apache-2.0 (Community)

Apache-2.0

Install

pip install python-flyway

pip install South

Install

pip install python-flyway

pip install South

Rating

★ 4.6

★ 4.0

Rating

★ 4.6

★ 4.0

Key Features

Flyway

1SQL-first migrations stored as versioned files (V1__, V2__, etc.)
2Checksums detect accidental changes to already-applied migrations
3Supports PostgreSQL, MySQL, SQLite, Oracle, SQL Server, and more
4Java-based CLI and Maven/Gradle plugins; also available as Docker image
5Repair command fixes checksum mismatches and failed migration state

South

1Pre-Django-1.7 migration framework providing schema and data migrations
2Supports forward and backward migration for rollback capability
3Auto-detection of model changes to generate migration files
4Data migrations to transform existing rows during schema changes
5Still works in Django 1.6 and older projects requiring long-term maintenance

How Python Data Engineers Use These Tools

Flyway

Python data engineers use Flyway when SQL migrations need to be shared across polyglot teams. The CLI is invoked from Python scripts, Makefiles, or CI pipelines via subprocess — pointing Flyway at a directory of numbered SQL files and a JDBC connection string. This makes it easy to apply identical migrations to dev, staging, and production databases in automated deployments.

South

Engineers maintaining legacy Django projects running Django 1.6 or earlier use South to manage schema evolution. New projects should use Django's built-in migrations instead. For teams upgrading legacy codebases, South migrations can be converted to Django native migrations using the `manage.py migrate --run-syncdb` workflow.

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Alembic vs South

Individual Tool Pages

View Flyway details →View South details →

Side-by-Side Comparison

Flyway

South

Flyway

South

Best For

✓Database migration management across polyglot teams using SQL-first versioned scripts
✓Enterprises needing a proven migration tool that works across many database engines
✓CI/CD pipelines where migrations run as a pre-deployment step in any language stack

✓Historical Django schema migrations for codebases running Django 1.6 or earlier
✓Maintaining very legacy Django projects that have not been upgraded in over a decade
✓Understanding Django migration history — South directly inspired the built-in migrations system

Best For

✓Database migration management across polyglot teams using SQL-first versioned scripts
✓Enterprises needing a proven migration tool that works across many database engines
✓CI/CD pipelines where migrations run as a pre-deployment step in any language stack

✓Historical Django schema migrations for codebases running Django 1.6 or earlier
✓Maintaining very legacy Django projects that have not been upgraded in over a decade
✓Understanding Django migration history — South directly inspired the built-in migrations system

Weaknesses

•Java-based core; the Python CLI wrapper adds friction for pure Python teams
•SQL-centric approach does not integrate with Python ORM schema definitions
•Undo migrations and advanced features require the paid Teams or Enterprise edition

•Completely obsolete — Django's built-in migrations superseded South in Django 1.7 (2014)
•Not compatible with Django 2.x or any later version
•No active maintenance or security updates; should be removed from any active codebase

Weaknesses

•Java-based core; the Python CLI wrapper adds friction for pure Python teams
•SQL-centric approach does not integrate with Python ORM schema definitions
•Undo migrations and advanced features require the paid Teams or Enterprise edition

•Completely obsolete — Django's built-in migrations superseded South in Django 1.7 (2014)
•Not compatible with Django 2.x or any later version
•No active maintenance or security updates; should be removed from any active codebase

License

Apache-2.0 (Community)

Apache-2.0

License

Apache-2.0 (Community)

Apache-2.0

Install

pip install python-flyway

pip install South

Install

pip install python-flyway

pip install South

Rating

★ 4.6

★ 4.0

Rating

★ 4.6

★ 4.0

Key Features

Flyway

1SQL-first migrations stored as versioned files (V1__, V2__, etc.)
2Checksums detect accidental changes to already-applied migrations
3Supports PostgreSQL, MySQL, SQLite, Oracle, SQL Server, and more
4Java-based CLI and Maven/Gradle plugins; also available as Docker image
5Repair command fixes checksum mismatches and failed migration state

South

1Pre-Django-1.7 migration framework providing schema and data migrations
2Supports forward and backward migration for rollback capability
3Auto-detection of model changes to generate migration files
4Data migrations to transform existing rows during schema changes
5Still works in Django 1.6 and older projects requiring long-term maintenance

How Python Data Engineers Use These Tools