Managed Objects
Managed objects, or instances of NSManagedObject, are what an app will interact with the most. A managed object can be thought of as a dictionary with a known set of keys, and with known types of objects (like string or number) by key. Attributes for managed objects can always be accessed with this technique:
NSString *movieName = [myMovie valueForKey:@"movieName"];
And attributes can always be updated using setValue:forKey:
[myMovie setValue:@"Casablanca" forKey:@"movieName"];
Managed objects can be defined as subclasses of NSManagedObject, which will allow accessing the attributes as properties:
[myMovie setMovieName:@"Casablanca"];NSString ...
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