title: Core Date Concept: NSFetchedResultsController vs. NSManagedObject objectsWithFetchRequest
body: <p>When do I use a <a href="http://developer.apple.com/library/ios/#documentation/CoreData/Reference/NSFetchedResultsController_Class/Reference/Reference.html" rel="nofollow">NSFetchedResultsController</a> in comparsion to the <a href="http://restkit.org/api/0.10.0/Categories/NSManagedObject+ActiveRecord.html#//api/name/objectsWithFetchRequests%3a" rel="nofollow">objectsWithFetchRequest</a> method in NSManagedObject? Are there typical scenarios? </p>