A token that indicates which generation of the persistent store is being accessed.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
- watchOS 3.0+
When a managed object context is pinned to a specific generation of the app data, a query generation token will be associated with that context.
Identifying Generations of App Data
An encapsulation of conflicts that occur during an attempt to save a managed object.
An encapsulation of conflicts that occur during an attempt to save changes in a managed object context.
A policy object that you use to resolve conflicts between the persistent store and in-memory versions of managed objects.