![]() ![]() Therefore, those use cases and print receipt use case has the dependency “extends”. After checking balance, deposit money or withdraw money, the customer can print a receipt. To withdraw money, the system should first verify the balance. When a use case requires the support of another use case, those two use cases have the dependency “include”. There are two dependencies called include and extends. Furthermore, use case diagrams can also represent dependencies. The bank is a secondary actor, and it performs the use case filling the ATM with cash. Lines represent the association between customer and the use cases. ![]() He performs use cases such as check balance, deposit cash and withdraws money. The user case diagram for an ATM is as follows. Moreover, a rectangle represents the system boundary. It can be a person, another system or an organization who has the goal to use the system. ![]() An ellipse represents a use case, and the name is written inside of it. Use case diagram is a behavioral diagram.Ī single use case represents the high-level functionality of a system. Structured modelling describes the static features of the system while the behavior modelling describes the dynamic nature of the system. They are structured modeling and behavior modeling. Side by Side Comparison – Use Case Diagram vs Activity Diagram in Tabular Form Two of them are use case diagram and activity diagram. These diagrams help conceptual modelling and make it simple and easier to understand the system. UML diagrams help to represent Object Oriented concepts. Object Orientation is the most common methodology to develop software solutions. It helps to build a pictorial representation of the software system. It is different from other programming languages such as C, C++, Java. UML stands for Unified Modelling Language. The key difference between use case diagram and activity diagram is that the use case diagram helps to model the system and user interactions while the activity diagram helps to model the workflow of the system. ![]()
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