Database Migration Master database schema and data migrations across ORMs (Sequelize, TypeORM, Prisma), including rollback strategies and zero-downtime deployments. When to Use This Skill - Migrating between different ORMs - Performing schema transformations - Moving data between databases - Implementing rollback procedures - Zero-downtime deployments - Database version upgrades - Data model refactoring ORM Migrations Sequelize Migrations TypeORM Migrations Prisma Migrations Schema Transformations Adding Columns with Defaults Renaming Columns (Zero Downtime) Changing Column Types Data Transfo…