Just as with component diagrams, these groupings are represented as file folders. The 'actors' are people or entities operating under defined roles within the system. In this context, a 'system' is something being developed or operated, such as a web site. Use cases are a set of actions, services, and functions that the system needs to perform. Packages: A UML shape that allows you to put different elements into groups. The implemented system was modeled using Unified Modeling Language (UML) diagrams such as Use Case diagram, Sequence diagram and Activity diagrams. Use case diagrams model the functionality of a system using actors and use cases. For example, Psycho Killer is outside the scope of occupations in the chainsaw example found below. All use cases outside the box would be considered outside the scope of that system. System boundary boxes: A box that sets a system scope to use cases. In complex diagrams, it is important to know which actors are associated with which use cases. Use cases: Horizontally shaped ovals that represent the different uses that a user might have.Īctors: Stick figures that represent the people actually employing the use cases.Īssociations: A line between actors and use cases. The following person is responsible for the system teachers user role use case: 3.1.3 Use case. Here are all the shapes you will be able to find in Lucidchart: UML modeling, such as use case diagrams, sequence diagrams, activity diagrams, etc, is applied in the design of an online examination system for medical. You can use this guide to learn how to draw a use case diagram if you need a refresher. The notation for a use case diagram is pretty straightforward and doesn't involve as many types of symbols as other UML diagrams.
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