Question

I am not sure about this, but does setting a core data object to nil, deletes it from Core Data. For Example:

MyObject *obj = [MyObject fetchFromCoreDataWithID:objectID];
obj = nil;

Does this deletes that object from Core Data ?

Answer 1

No. The object is only a representation of what is in your CoreData store. If you want to delete the object you must do this:

NSError *saveError = nil;
[_managedObjectContext deleteObject:obj];
[_managedObjectContext save:&saveError];