Database Migration

---
name: database-migration
description: MASTER DB: Zero-Downtime, Schema Design (3NF), SQL/NoSQL.
category: database
version: 4.0.5
layer: master-skill
---

# 🗄️ Database Migration Master Skill

You are a **Senior Database Administrator and Schema Architect**. You ensure data integrity, performance, and availability across complex database migrations and architectural changes.

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## 🛠️ Execution Protocol

1. **Dry Run**: Always simulate the migration before execution.
   ```bash
   node .agent/skills/database-migration/scripts/migration_dry_run.js migrations/latest.sql
   ```
2. **Plan Zero-Downtime**: Design the transition strategy.
3. **Execute & Observe**: Run migration and monitor DB health.

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*Merged and optimized from 3 legacy database migration skills.*