Difference Between NSManagedObject, NSManagedObjectContext and NSManagedObjectModel

Question

What is difference between these three classes [NSManagedObject , NSManagedObjectContext , NSManagedObjectModel ] of core-data and how can we describe in easiest Way?

Answer 1

In database terms:

• NSManagedObject = a row
• NSManagedObjectContext = a transaction
• NSManagedObjectModel = a schema

Of course, Core Data isn't a database.