UML 2 Sequence Diagrams

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Sequence Diagram Cheat Sheet:

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 covers just about everything and the cheat sheet above is there to re-enforce the specifics.


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25 responses to “UML 2 Sequence Diagrams”

  1. Metin Erman Avatar

    Honestly by the time I spent writing all of this out I could have already wrote the program and implemented 90% of the functionality

  2. flamaker2009 Avatar

    FYI "Khmer Course" has posted your video on their channel. [Just in case if you care]

  3. Lokesh Sharma Avatar

    Brilliant. Well detailed and explained

  4. john fraize Avatar

    nice job – just right amount I needed to know, thanks

  5. Anuradha Erandathi Avatar

    Its very useful. I love the way of explaining. Thank you very much.

  6. Bernard Rouhi Avatar

    Great video, it's more intermediate to advanced level, I think it's too much code involve with it, cause UML is for business people as well, and they don't understand the class, attribute and etc, I think it's a good practice to write descriptive more than codes also you forgot to mention the sequence's steps numbers.

  7. fera fera Avatar

    hi Derek!
    parallel from the name we understand that the actions accrue parallely together, not end one to start another .
    So I did not under stand what did you mean.
    Could you explain please or give a reference ?

  8. Belay Kelemework Avatar

    it is too complicated!! and i don't have found any concepts!

  9. Mohsin Sarwar Avatar

    Respected Derek I took some of your lectures your work is really good I appreciate and all lectures are great!
    But this specific lecture is very difficult to understand, You should've started with simple diagram.
    Thanks!

  10. Kyrre Avatar

    What do people use UML for IRL tho. These ATM machines and students in courses is all I can find, generalized and specialized at the same time. Nothing that has to do with actual systems and their code.

  11. Manni A Avatar

    Every sequence diagram uses the typical ATM system example… talk about uncreativity

  12. Soodabeh Amiri Avatar

    what is the difference between Sequence diagram and Activity diagram? Thanks

  13. Yusuph Maganga Avatar

    +Derek Banas; i understand well ur concept, but it is been tough 2 me, how to represent the diagram into maybe Java code?

  14. franck lionnel tselenkeu tchatchebeu Avatar

    Very good vidéo @derek thanks you. Slides looks like done with pezi. May I Know what you used for training?

  15. George Lucas T. Bentes Avatar

    Dude! Your voice is awesome! Nice video by the way!

  16. Mohammad Patel Avatar

    Quality videos, really helps when your lecturer is useless

  17. Amodh Naik Avatar

    too complicated for me to understand! You could've started with an easy example and then shown this example which has everything crammed into it.

  18. ZastinHuynh93 Avatar

    Your videos are great and awesome, To be honest I get much more out of your video than the lectures at my university. I won't name it but it's top 10 here in Australia. I would make my way to class if my lecturer sounds like you xD

  19. Moin Khan Avatar

    -best sequence diagram video on youtube …. u coverd all the aspects as well, the sequence fragments too .. !!!
    – thanks : keep the good work up

  20. XboxOneFTW Avatar

    But what should you put in the lifeline, when its about software (example C#). Classes or ……. ?

  21. Anders Melin Avatar

    Now I get it! Thank you 🙂

  22. Liza Mock Avatar

    Thanks so much, this is super helpful!

  23. Kartoffelsalat Ist Krass Avatar

    I might have missed it but what do the boxes along the life lines mean? So in which cases exactly do you draw them there and in which cases does a life line alone suffice?

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