FORMAL ANALYSIS OF USE CASE DIAGRAMS

Use case diagrams play an important role in modeling with UML. Careful modeling is crucial in obtaining a correct and efficient system architecture. The paper refers to the formal analysis of the use case diagrams. A formal model of use cases is proposed and its construction for typical relationships between use cases is described. Two methods of formal analysis and verification are presented. The first one based on a statesʹ exploration represents a model checking approach. The second one refers to the symbolic reasoning using formal methods of temporal logic. Simple but representative example of the use case scenario verification is discussed.