Django ORM

Pythonic abstraction layer mapping database tables to classes: execute complex queries and manage schemas without writing raw SQL.

This abstraction layer translates Python objects into optimized SQL for major engines: PostgreSQL, MySQL, MariaDB, and Oracle. It handles complex operations (like select_related for joins or annotate for aggregations) through a chainable QuerySet API. By automating schema migrations and enforcing parameterized queries, it eliminates manual DDL management and protects against SQL injection. It serves as the architectural backbone for high-traffic platforms like Instagram and Pinterest: providing a consistent interface for managing millions of rows across distributed clusters.

https://docs.djangoproject.com/en/stable/topics/db/models/