IOS 5 Core Data, how to have NSFetchedResultsController return results matching the parent one to many relationship?

Your approach of setting the NSFetchedResultsController to nil is robust. The fetched results controller should be created lazily and you just set it to nil if you need to change the predicate.

There is no need to make a ID field in the Event entity to identify the User. You said you already have a relationship setup user->event. Relationships go both ways (assuming you set it up that way, it is called bidirectional and it is best practice to always use them) so you can easily create a NSPredicate that looks for events where user = user.

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.