Database Migrations Concept (Track DB Changes Like Code)

A migration is a versioned script that changes the database structure. Without migrations: - teams manually edit DB - environments drift apart (dev vs prod) - changes get lost With migrations: - DB changes are tracked in git - you can apply changes in a controlled order - rollback becomes possible ## Migration lifecycle idea ```mermaid flowchart TD A[Write migration] --> B[Commit to git] B --> C[Run in dev] C --> D[Run in staging] D --> E[Run in production] ``` This is a core professional practice for any serious app. > Next: Caching, speed up pages and reduce database load.