---
title: configuration
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nspersistentstoredescription/configuration
---

# configuration

The name of the configuration used by this store.

## Declaration

```swift
var configuration: String? { get set }
```

## Discussion

Discussion This displays the name of a configuration in the receiver’s managed object model that will be used by the new store. The configuration can be nil, in which case no other configurations are allowed.

## See Also

### Configuring a Persistent Store Description

- [url](coredata/nspersistentstoredescription/url.md)
- [timeout](coredata/nspersistentstoredescription/timeout.md)
- [type](coredata/nspersistentstoredescription/type.md)
- [isReadOnly](coredata/nspersistentstoredescription/isreadonly.md)
- [shouldAddStoreAsynchronously](coredata/nspersistentstoredescription/shouldaddstoreasynchronously.md)
- [shouldInferMappingModelAutomatically](coredata/nspersistentstoredescription/shouldinfermappingmodelautomatically.md)
- [shouldMigrateStoreAutomatically](coredata/nspersistentstoredescription/shouldmigratestoreautomatically.md)
- [setOption(_:forKey:)](coredata/nspersistentstoredescription/setoption(_:forkey:).md)
- [setValue(_:forPragmaNamed:)](coredata/nspersistentstoredescription/setvalue(_:forpragmanamed:).md)