You could do your modelling in xCode using a core data model. Just create a Core Data application in Xcode and play with the model file. http://developer.apple

You could do your modelling in xCode using a core data model. Just create a Core Data application in Xcode and play with the model file. http://developer.apple.com/macosx/coredata.html http://developer.apple.com/macosx/coredata.html http://developer.apple.com/macosx/images/CoreDataSimpleDataModel.jpg http://developer.apple.com/macosx/images/CoreDataSimpleDataM...