Describe your app’s object structure.
- Core Data
In most cases, you describe your app’s data model using Xcode’s data model editor.
NSManaged represents the
.xcdatamodeld file in your project’s source list. This is where you define entities that you use to generate
NSManaged subclasses for Core Data to manage.
The entities you create are
NSEntity instances. Entities’ properties are subclasses of
NSAttribute for attributes,
NSRelationship for relationships, and
NSFetched for fetched properties.
The various attribute types are enumerated in