Learn how to make Use Case Diagrams in this tutorial. Both beginners and intermediate UML diagrammers will find all the necessary training and examples on systems, actors, use cases, and include and extend relationships.
UML Use Case Diagrams show a system or application; then they show the people, organizations, or other systems that interact with it; and finally, they show a basic flow of what the system or application does.
This tutorial explains the four main characteristics of Use Case Diagrams: systems, actors, use cases, and relationships.
A system is whatever you’re developing. It could be a website, a software component, a business process, an app, or any number of other things. You represent a system with a rectangle.
The next aspect of Use Case Diagrams are actors. An actor is going to be someone or something that uses our system to achieve a goal, and they’re represented by a stick figure.
Use Cases are elements that really start to describe what the system does. They’re depicted with an oval shape and they represent an action that accomplishes some sort of task within the system.
The final element in Use Case Diagrams are relationships, which show how actors and use cases interact with each other. There are different types of relationships (like association, include, extend, and generalization) that are represented by varying types of lines and arrows.
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ayyy i can't get these arrows on the app smh
God, UML diagrams are so fucking boring.
Great explanation. Easy to understand!
Not sure the really value of Lucichart has as a diagram app. I think the best "thing" that this application has is people like Chloe: Wonderful explantation. Wonderful video. This could be do with other programs like Visual Paradigm. (Wonderful Chloe – good work in this video)
I love the tutorials, but I wish they would use the same case for each type of diagram. For example, they show how to make a Use Case Diagram for a banking app in this video. There should be a video for an Activity Diagram, Class Diagram, and Sequence Diagram for the same banking app just to get an idea of how to progress from one diagram to another using the same concept throughout the entire process.
Either way, excellent work!
In ATM UseCase Diagram , is it possible to connect Maintenance and Stocker Actors with Customer Actor UseCases ?
Thanku so much, Couldn't understand a bit from my lecture slides but u made it certainly an easy task, doing great job, Well done.
What an amazing video, thanks guys
can system have 2 main actors
Very well explained💯👏
Thanks for making this vid. I have a question though. According to the video "Log In" activity is handled within the app and does not interact with the Bank. Most log ins are implemented via a backend API that is handled by backend servers and not the app itself. In this case should we set up a relationship between Bank and Log in activity?
Very useful, thank you!
Trust me! This is wonderful! Thank You So Much
Can we extend an included use case or another extended use case?
Love the CC, Thx for your help! XDXD
I fall in love with this girl, any media? who is she? looks smart new fan
But doesn't the bank have to receive login data and then send the result (whether or not successful)? So there should actually be a line from bank to log in as well
New firend here from Italy, Subbed! Interesting video
The best explanation to date.
This was extremely useful, thanks! Love LucidChart by the way – makes my life so much easier
can you teach data flow diagram?
Thank you, really good tutorial 😊👍
You explained it so well. Thank you so much.
Thanks so much for this video!
it really helps me alote!
Helpful: Relevant video that clarifies what we learnt in class,Thanks!
I love her voice.
I sneeze with eyes open. Now what!!
Lovely explanation..Thanks alot
Excellent tutorial! Well done!