A class diagram describes the attributes and operations of a class and also the constraints imposed on the system. Class diagrams are widely used in the modeling of object-oriented systems because ...

In our third installment on UML we'll show you ... you don't know the class that this object is an instance of. The third way to represent an object is to combine the two previously discussed ...

The objective of this series is to provide all modelers with guidance as to how to produce a high-quality conceptual entity/relationship model using UML class diagram ... each instance of CONSTRAINED ...

Across the top of your diagram, identify the class instances (objects) by putting each class instance inside a box (see above figure). If a class instance sends a message to another class instance, ...