---
title: Manual migrations
framework: coredata
role: collectionGroup
role_heading: API Collection
path: coredata/manual-migrations
---

# Manual migrations

Migrate elaborate data models with changes that go beyond the capabilities of both lightweight and staged migrations.

## Topics

### Entity Mapping

- [NSMigrationManager](coredata/nsmigrationmanager.md)
- [NSMappingModel](coredata/nsmappingmodel.md)
- [NSEntityMapping](coredata/nsentitymapping.md)
- [NSEntityMigrationPolicy](coredata/nsentitymigrationpolicy.md)
- [NSEntityMappingType](coredata/nsentitymappingtype.md)
- [NSPropertyMapping](coredata/nspropertymapping.md)

## See Also

### Data model migration

- [Migrating your data model automatically](coredata/migrating-your-data-model-automatically.md)
- [Staged migrations](coredata/staged-migrations.md)