A UML Class Diagram showing cheat sheet. You can edit this UML Class Diagram using Creately diagramming tool and include in your report/presentation/website.
Sequence diagram template for airport checking system. Creating sequence diagrams are easier with sequence diagram templates. Click the image to get all the important aspects of UML Sequence diagrams including sequence diagram notations, how to draw sequence diagrams, the usage of sequence diagrams and examples.
You can download freely the PlantUML Language Reference Guide in PDF format.
In order for stakeholders and project team to read the steps easier, you can optionally generate a UML sequence diagram from the scenario, to visualize the steps in sequence diagram. In this tutorial, we will try to write a simple user story and then generate a sequence diagram from it.
Writing user story scenario
Create a new project with Visual Paradigm. Select Project > New from the application toolbar.
In the New Project window, enter Online Shopping as project name. Click the Create Blank Project button.
Open the User Story page in UeXceler. If you are not currently opening UeXceler, select UeXceler > UeXceler from the application toolbar first, and then open the User Story page.
Create a general user story. Click on Add a feature that can... and enter User can add an item to shopping cart. as name.
Double click on the user story to open it.
Open the Scenario page.
Enter the steps to accomplish this user story. Click on the first step and enter Open an item page.
Press Enter and enter step 2: Select attributes (e.g. appearance, style).
A quantity box will be displayed when the item user selected is still available for purchasing. Let's write an if-then-else for this. Press Enter to go to the third step. Then, press Ctrl-Space to toggle the Statement Control list.
Select If from the Statement Control list.
Enter out of stock.
Let's say the system will display an 'out of stock' message in this situation. Press Enter to go into the if condition. Then, press Ctrl-Space again.
This step is performed by the system. Let's create a System Response. Select System Response from the Statement Control list.
Enter Display 'Out of stock' message..
A quantity box will be displayed in the 'else' case. Now, press Enter and press Ctrl-Space to toggle the Statement Control list.
Select Change to Else from the Statement Control list.
Press Enter.
Toggle the Statement Control list by pressing Ctrl-Space. Select System Response from the list and enter Show quantity box..
Press Down to go to end if. Then, press Enter to go to step 5.
The customer will then enter the quantity of item and add the item to cart. Enter Enter quantity. and Click 'Add to Cart'. as step 5 and 6, respectively.
Once the item is added to cart, the system will prompt if the customer want to continue shopping. Press Enter to create a new step. Enter a system response Prompt 'Do you want to continue shopping?' as step 7.
If the customer has chosen 'Yes', the system will then reopen the item page. Use the Statement Control list to add an if - has chosen 'Yes'.
Press Enter to go into the if condition. Press Ctrl-Space to toggle the Statement Control list. This time, select Jump.
Click on the tiny arrow button next to step 1 to represent the jumping to step 1.
Generating sequence diagram from user story
We have just completed the scenario. Let's generate a UML sequence diagram from it. Select Synchronize to Diagram > Synchronize to Sequence Diagram from the toolbar.
A UML sequence diagram is generated from the scenario in a second.
Sequence Diagram Cheat Sheet Printable
If necessary, press Ctrl-Tab to go back to the user story.
Related Links
Posted by Derek Banas on Nov 12, 2012 in Java Video Tutorial | 8 comments
Welcome to my tutorial on UML 2.0 Sequence Diagrams! Sequence diagrams model interactions in your program and provide you with a logical way to layout your system. They are about showing the order of interactions between the parts of your program.
In making sequence diagrams, you describe which interactions are triggered and when. They focus in on the order of events in all interactions.
The video below covers just about everything and the cheat sheet that follows is there to re-enforce the specifics.
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UML 2.0 Sequence Diagram
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Hi Derek ,
There’s Nothing to say but “Hats Off” . You’re much much better than my teacher . In 12 mins you explained what my teacher couldn’t get us to understand for a very long time .
I don’t why , I was saying , may be It’s my fault , not my teacher’s , this thing is hard to understand and i’m idiot , dumb … .
But now , No way , this is completely clear and obvious . Thank you Derek , I really really appreciate your work .
Thank a bunch . You are the man
Hi, thank you for posting this.
Do you have the UMLet file of this? I’m learning how to use umlet and having problems drawing a well organized diagram like this one.
Thanks
Ed
Very Nice Tutorial. As Atif said it’s 10 times simpler and easier then what our teachers teach.
Hi Derek , Thanks for your great tutorials , i have one question, how should i identify participants from use Case diagram, as u know use case has more general information ,however in order to draw a sequence diagram u need to know all interactions and details, so i get confused how to drag participants and message exchanges from a useCase, i appreciate any help.