There is previous post about difference of @synthesize and @dynamic.

I wanna to know more about dynamic from the perspective of how to use @dynamic usually.

Usually we use @dynamic together with NSManagedObject

// Movie.h
@interface Movie : NSManagedObject {
}
@property (retain) NSString* title;
@end

// Movie.m
@implementation Movie
@dynamic title;
@end

Actually there are no generated getter/setter during compiler time according to understanding of @dynamic, so it is necessary to implement your own getter/setter.

My question is that in this NSManagedObject case, what is the rough implementation of getter/setter in super class NSManagedObject ?

Except above case, how many other cases to use @dynamic ?

Thanks,