database-migrator
Database Migrator
A production-grade database migration system that moves schemas, data, and logic between database providers. This skill reads the full source database schema, analyzes every table, column, index, constraint, trigger, stored procedure, and view, then generates executable migration scripts for the target provider. It validates the migration with row counts and data checksums, and produces a comprehensive migration-plan.md with step-by-step instructions, rollback procedures, and estimated downtime.
This is not a schema designer. It is a cross-provider migration engine that handles the hard parts: data type incompatibilities, provider-specific SQL dialects, foreign key ordering, sequence/auto-increment translation, trigger rewrites, and stored procedure conversion.
Supported Migration Paths
| Source Provider | Target Provider | Complexity |
|---|---|---|
| PostgreSQL | MySQL | Medium |
| PostgreSQL | Supabase (Postgres) | Low |
| PostgreSQL | PlanetScale (MySQL) | Medium-High |
| PostgreSQL | MongoDB | High |
| MySQL | PostgreSQL | Medium |
| MySQL | Supabase (Postgres) | Medium |
| MySQL | PlanetScale (MySQL) | Low |
| MySQL | MongoDB | High |
| Supabase (Postgres) | PostgreSQL | Low |
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