What is managed object context and what are its functions?

 A managed object context is a provisional ‘scratchpad’ of sorts in any application for a collection or set of related objects. It is represented generally by an instance of the method NSManagedObjectContext( ). These related objects together represent a consistent view from the inside of one or even more persistent stores.

• Multiple copies of any object could exist in various contexts but a singular instance of the managed object exists in not more than one context.

The chief functions of a managed object context comprise of the following:

• Management of life cycle: In this case, the context delivers proof, undo/redo and handling of the inverse relationship.
• Notifications: These denote the context posts notices at different points which can be observed from another part of the application.
• Concurrency: When the Core Data makes use of confinement of threads or serialized queues in order to protect the managed object contexts and the managed objects too.