# Backend Migrations

> Create and manage database schema migrations with reversible operations, zero-downtime deployments, and safe rollback strategies. Use this skill when writing database migrations for PostgreSQL, MySQL, SQLite, MongoDB, or any database system; when using ORMs like Prisma, Sequelize, TypeORM, ActiveRecord, Django ORM, or similar migration tools; when implementing schema changes (adding tables, columns, indexes, constraints); when performing data migrations or transformations; when creating indexes on large tables with concurrent options to avoid locks; when separating schema changes from data migrations for safer rollbacks; when implementing zero-downtime deployment strategies for high-availability systems; when versioning database schemas and managing migration order; or when working with database change management in production environments.

- Skill: `diegosouzapw/backend-migrations` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add diegosouzapw/backend-migrations`
- Raw SKILL.md: https://api.skillmd.com/api/skills/diegosouzapw/backend-migrations/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: diegosouzapw (https://skillmd.com/u/diegosouzapw)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/diegosouzapw/backend-migrations

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# Backend Migrations

This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they relate to how it should handle backend migrations.

## When to use this skill

- When creating database migration files with schema or data changes
- When writing reversible migrations with rollback/down methods
- When implementing zero-downtime deployment strategies
- When adding indexes to large tables with concurrent options
- When separating schema changes from data migrations
- When managing database versioning and migration order
- When using ORM migration tools like Prisma, Sequelize, TypeORM, ActiveRecord, Django migrations
- When planning safe database deployment and rollback strategies

## Instructions

For details, refer to the information provided in this file:
[backend migrations](../../../agent-os/standards/backend/migrations.md)