Individual skill
database-migrations
PostgreSQL、MySQL、一般的なORM（Prisma、Drizzle、Kysely、Django、TypeORM、golang-migrate）全体のスキーマ変更、データマイグレーション、ロールバック、ゼロダウンタイムデプロイメントのためのデータベースマイグレーションベストプラクティス。
docs/ja-JP/skills/database-migrations/SKILL.md
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# データベースマイグレーションパターン
本番環境システム用の安全で可逆的なデータベーススキーマ変更。
## アクティベーション時期
- データベーステーブルの作成または変更
- 列またはインデックスの追加/削除
- データマイグレーション（バックフィル、変換）の実行
- ゼロダウンタイムスキーマ変更を計画
- 新しいプロジェクト用のマイグレーションツール設定
## コア原則
