In our third installment on UML we'll show you how to use sequence diagrams as a tool in your application development and an understanding of object interaction.

The UML core comprises use cases to model requirements and classes and objects to model system structure, while statecharts and sequence diagrams model behavior.

Figure 1. Class diagram of a video rental application. UML and OCL The Object Constraint Language (OCL) is a formal language that expresses side effect-free constraints 3,6,7 in UML models. A side ...

OOS (Object-Oriented Systems) facilitate the change in the system in order to improve the functionality of the system. UML (Unified Modeling Language) as a standard as a standard of specification ...