IPhone iOS how to delete local files referenced from Core Data entity nested relationships when the entity is deleted?

You can implement the prepareForDeletion method in your NSManagedObject subclass. It is invoked automatically before an object is deleted, so that you can also delete referenced files from there.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.