A version-controlled change to a database schema — adding tables, modifying columns, or creating indexes — that can be applied and rolled back consistently.
Migration frameworks (Django's migrations, Alembic for SQLAlchemy) generate migration files from model changes, track which migrations have been applied, and execute them in order. This ensures all environments (dev, staging, prod) have identical database schemas.
Running 'python manage.py makemigrations' after adding the GlossaryTerm model, then 'migrate' to create the table in the database.
Database migrations are essential for team development and deployment — they eliminate manual SQL scripts and ensure schema changes are reproducible and reversible.
Atomicity, Consistency, Isolation, Durability — the four properties that guarantee database transact...
A data structure that speeds up query performance by creating a fast lookup path to rows based on sp...
The process of organizing database tables to reduce data redundancy and improve data integrity by fo...
Horizontally partitioning data across multiple database instances, distributing load and enabling st...
A high-level Python web framework that provides an ORM, admin interface, authentication, and 'batter...
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