Class Diagram Usage When modeling the static view of a system, class diagrams are typically used in one of three ways,to model: The vocabulary of a system ■ Collaborations A logical database schema Object Oriented Analysis and Design 4Object Oriented Analysis and Design 4 Class Diagram Usage  When modeling the static view of a system, class diagrams are typically used in one of three ways, to model: ▪ The vocabulary of a system ▪ Collaborations ▪ A logical database schema