Adding structure diagrams to models
Structure diagrams model the structure
of a composite class; any class or object that has an object model
diagram can have a structure diagram.
In addition, a structure
diagram supports some of the features supported by an object model
diagram and uses the properties defined in the
ObjectModelGE
subject.Object model diagrams focus more on the specification of classes, whereas structure diagrams focus on the instances used in the model. Although you can put classes in structure diagrams and objects in the object model diagram, the toolbars for the diagrams are different to allow a distinction between the specification of the system and its structure.
The following figure shows a structure diagram.