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# NSManagedObjectContext.NotificationKey

Keys to access details in user info dictionaries of managed object context notifications.

```
enum NotificationKey
```

## Topics

### Constants

[`case deletedObjectIDs`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/deletedObjectIDs)

A key for the set of deleted object identifiers.

[`case deletedObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/deletedObjects)

A key for the context’s set of deleted objects.

[`case insertedObjectIDs`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/insertedObjectIDs)

A key for the set of inserted object identifiers.

[`case insertedObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/insertedObjects)

A key for the context’s set of inserted objects.

[`case invalidatedAllObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/invalidatedAllObjects)

A key for the context’s set of all invalidated objects.

[`case invalidatedObjectIDs`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/invalidatedObjectIDs)

A key for the set of invalidated object identifiers.

[`case invalidatedObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/invalidatedObjects)

A key for the context’s set of invalidated objects.

[`case queryGeneration`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/queryGeneration)

A key for the token that indicates which generation of the persistent store Core Data is accessing

[`case refreshedObjectIDs`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/refreshedObjectIDs)

A key for the set of refreshed object identifiers.

[`case refreshedObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/refreshedObjects)

A key for the context’s set of refreshed objects.

[`case updatedObjectIDs`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/updatedObjectIDs)

A key for the set of updated object identifiers.

[`case updatedObjects`](/documentation/CoreData/NSManagedObjectContext/NotificationKey/updatedObjects)

A key for the context’s set of updated objects.

### Creating and Comparing Keys

### Operators

## Relationships

### Conforms To

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Hashable`](/documentation/Swift/Hashable)

[`Copyable`](/documentation/Swift/Copyable)

[`Equatable`](/documentation/Swift/Equatable)

[`Escapable`](/documentation/Swift/Escapable)

---

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