Class diagrams are widely used in the modeling of object-oriented systems because they are the only UML diagrams that can be mapped directly to object-oriented languages. The purpose of the class ...

Introduction to UML: UML (Unified Modeling Language) is a standardized modeling language that helps visualize, specify, construct, and document the structure and behavior of software systems. It ...

Abstract: Both a UML model of requirement and a UML model of a design are defined as a pair of class diagram and a family of sequence diagrams. We then give an unified semantics for models of ...