A use case diagram consists of the system, the related use cases and actors and relates these to each other to visualize: what is being described? ( system), who is using the system? ( actors) and what do the actors want to achieve? ( use cases), thus, use cases help ensure that the correct system is developed by capturing the requirements from the user's point of view.Ī use case is a list of actions or event steps typically defining the interactions between a role of an actor and a system to achieve a goal. View and play PowerPoint presentations online.Ī use case describes how a user uses a system to accomplish a particular goal.
