Database Migration Script GeneratorPREMIUM

Generate a database migration script for this change:

**Current Schema:**
```sql
{{CURRENT_SCHEMA}}
```

**Desired Changes:**
{{DESIRED_CHANGES}}

**Database System:** {{DATABASE_SYSTEM}}
**Migration Tool:** {{MIGRATION_TOOL}}
**Environment:** {{ENVIRONMENT}}

Please provide:
1. Forward migration script (up)
2.…