UML use case diagrams

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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00:00 Introduction
00:20 Overview
01:01 Lucidchart - Free Diagramming Software
01:37 Systems
02:08 Actors
03:06 Primary and Secondary Actors
03:57 Use Cases
05:06 Relationships Overview
05:19 Association Relationships
07:17 Include Relationships
08:21 Extend Relationships
09:18 Include and Extend Relationships
10:14 Generalization Relationships
11:49 Conclusion
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[@davidalejandrodelosreyesos146]

This single video did more for me than an entire paid class.. good job!

[@-.-K._.]

Nah i see no memes here

[@karimkarroum2198]

true. very good video and explanation, and straight to the point.

[@rlfpotatoking9253]

Same, I was taught a more basic level use case diagram in class and even that was barely explained well, i'm so thankful this video exists, it's soo much better and concise

[@anandcp1]

exactly

[@vaiebhavpatil2340]

best leture on use-case diagrams on the whole youtube. went through 4 other videos but none explained as well as this one. great job.

[@-.-K._.]

Nah i see no memes here

[@tanyap7401]

This video is literally the best, after watching numerous videos without understanding much, this 12 minute video covered everything!! Thank you so much!

[@maraki_zrg]

oh my god I'm trying to understand this damn concept for 3 weeks now in university and you explained it better in a 12 minute video. god bless u really thanks and bravo for the great job

[@christaehrstein]

Thank you for the easy to understand Use Case example. This clarified many questions I had.

[@taha5539]

This was the best video I've seen about Use Case diagram, it's a shame that it has so few views.

[@sofonsteigernduwayezu2427]

dude is the best lecturer one should have he explain it better than my lecturer who's been with me for the past 4 months

[@dolunay-]

I have been watching vidoes for 2 hours but this was the only video I needed

[@olabisibabayemi]

simplicity personified! nice delivery coach

[@abhijitkumbhar1]

Best explanarion I came across about UML diagrams

[@JohnDoeAKA101]

Love, Peace and Thanks from South Africa

[@tayyabsami258]

Thanks alot this video is better than the course i pay for at the university

[@neerajshrivastava5600]

Top quality and outstanding explanation !!! You are a great teacher

[@nethmihimalsha965]

Thankyou for teaching cristal clear like this. One of the best teachers😊😊😊

[@StepPanda3K]

Thank you very much, I have an exam tomorrow, and this just saved me😭🙌

[@zubaerahammed]

Excellently explained. This is a masterpiece.

[@ezeozokam5002]

I understood this better than how i was taught in class. Thank you so much😊

[@momtoube743]

Thanks so much
you are a good teacher

[@madiegeorgiana1208]

thank you!! the examples were so good:)

[@malakmalak4830]

Perfect explanation 😄 thanks a lot!

[@divkairawan1424]

This is a very great explanation! Thumbs up

[@levanuc7906]

Better than a 2 hour class

[@dinushachathuranga7657]

Thanks a lot for the clear explanations💜

[@nikanoran.n.c8401]

Thankyou soo much,,,,,i really benefited from your video

[@nicka3203]

Very good explanation.

[@surendernegi3154]

Thanks for such awesome explanation of use case diagrams

[@nipunajith]

Great explanation. Thanks.

[@yusufnzm]

This was such a great video.

[@Sylvia-ly4wj]

simplified, concise and very well explained

[@thanhduongphan315]

Good explaination 🤩

[@shreyasawankar7601]

Help full Thanks from India...!

[@user-su4yz5om5w]

best video for understanding basic of use case

[@reason7895]

This Video is the BEST!!!!

[@zohaibsameer1998]

Greatly explained 🙂

[@romanulhaq_asrar]

this is one of the best video in all use case diagram videos in youtube thanks

[@VisualVibesGallery3820]

Thank you for making this video.

[@frankdaniel49]

Sneeze with open eyes to escape the matrix

[@marymwabili9044]

Mm w

[@mss7807]

wow that was impressive
great explanation

[@beko4733]

good job !
its very helpful for me

[@MercyDedeFoli]

It video was great , good job done sir

[@abdallahgasem628]

great tutorial , thanks

[@mirika_a_ziela4184]

You are the best ❤

[@mvuyisimtwa9224]

Thank you so much 🎉

[@impe-ri-vous9089]

Crazy helpful bro

[@Mr_Zimm]

Great video.

[@captainduki]

easy to understand. Thank you

[@HadiEbrahimi-yq9yj]

it was so helpful and I want to learn from you... thanks

[@rachaelezugwu3678]

Thank you so much
You made it easy for me.
Thank you so much

[@dhavalkalaria5384]

Thankyou for the reference :)

[@andy-moggo]

so clear and understandable

[@anonymousz7205]

great vid on use case definitely helpfull

[@MohamadModather99]

Thank you very much!!

[@achmadsyarif5129]

thank you ,best explanation

[@himashaerandana3432]

Thanks dude helped a lot

[@leartbajrami3589]

amazing explanation

[@CuteKittens23]

you can be good at some thing but may not be a good teach. all these other videos confused me even more than i was before and you explained everything in a fraction of a time they did and 1000% better.
thank you

[@candidate3512]

Very helpful thank you

[@Heshi540]

Thank you so much

[@YBIG05]

merci beaucoup for such a comprehensive content👍🤛

[@HaadiAnwary]

good video man 10/10

[@faizunnur4456]

Thank you very much.

[@user-em9xp3tw7t]

is there any relationship with login for all other options like check balance, transfer funds etc

[@EthanHunt-fg5sk]

I also wanted to ask that question

[@alikograce.5520]

great explanation

[@OlwethuMkhize922]

Give this man a Bells

[@ines9226]

Thank u so much

[@muhammadsamy7740]

that's so perfect thanks alot

[@Subayin]

thanks a lot it is a masterpiece

[@0xmkay]

I'v watched the older version of this video so many times that I can still hear the lady's voice in my head 😂.

[@3Dprintingshorts]

Thanks a lot 🙏

[@MartinFaehrmann]

Thank you so much 👌

[@code_spot]

very useful thanks.

[@venom2390]

Thank you ❤️

[@Malhiza_MamBhele]

YOU THE BOSS

[@gauthamkrishnan5948]

I believe "Pay from checking" and "Pay from savings" are extensions of the "Make payment" use case. Also, "Display login error" is an extension of "Verify password" use case.

[@yasminejas5007]

thank you so much!

[@empiretvgh]

Thank you

[@kavindagihan]

Fantastic🎉

[@EduardoMengesMattje]

ótimo vídeo

[@lemannsz]

Thank youuuuuuuuu really help

[@user-sq1qu5tv5h]

this video amazingggg

[@achmadsyarif5129]

best analogy

[@NAGM_CODE]

Every sneeze say "Thank God" not say "Excuse me"

[@odddellarobbia4]

The include and exclude part is where i fail to understand this video.
Isn't the use case like check balance should be behind include of login? what i understand is that if you don't login, then you cannot check balance since login use case has to be met first.
another thing that i'm still confused is what would the diagram look like if the actor has 2 roles, as primary and secondary actor? yes a bank might 'react' to customer use case, but what if the bank wants to do somethin within the app that doesn't involve customer? say, make a report of money that cashed out? Would love to hear the explanation with different use case, since if i recall this is a "remaster" version of another UML use case diagrams video from you guys, thank you!

[@riDdLer20025]

use case diagrams are about what to do rather than how to do. user can login, check balance, transfer funds. these are the things that user can do. but how to check balance? you have to login first. that is what you are saying. your idea can represent better in a sequence diagram not in an use case diagram. hope this helps. if i am wrong please do correct me.

[@acepilot4196]

what happaned to the older use case diagram video?

[@marosmincak5754]

Huh I'm not the only one who noticed it

[@acepilot4196]

@@marosmincak5754 maybe there was something wrong with the last one and they delete it

[@devanushjoseph]

They unlisted it because they made an updated video. If you have the link to the original video you can still watch it

[@mifzeena7390]

I am also looking for it

[@gilead1618]

That is so much better

[@ranasameh2086]

good job

[@radouane5376]

Thanks

[@user-ef9xs4mk7e]

Amazing explanation, but
I have one question.
Why didn't the verify password extends Display login error.
If anyone knows please reply

[@duckman03]

I'm not 100% sure but I believe its because an include use case is not a base use case so you cannot extend it, even if displaying the error stems from verifying if the password is valid/invalid.

[@yacine5046]

this is the single video explain uml with simple way

[@admildomanuel544]

Great tutorial

[@just_master9034]

No. We need the snek

[@hensleysapom3525]

When do I choose to use a short use case explanation instead of a detailed one, as a software developer?

[@weepingwallflower8017]

does the extend always happen after the said use case? 9:48

[@ThabisoNgwane]

asombrosa

[@thainoodleboii]

thanks

[@hudahabib-zq2oc]

greatttttt

[@ragnarokk347]

woww!

[@ilikerainworld]

I liked the older videos ):

[@khangvi2936]

Hi everybody.
As I understand it, a usecase is the behavior of an actor using an app, so the usecase to show errors or verify passwords don't seem to come from the user's behavior but from the app side, right? Instead, the log in usecase could be extend changing the password, or something the customer actively does...
I don't understand clearly, so I'll just say my thoughts. I hope everyone can help me answer it. Thank you

[@bugraozturk275]

Thanksss

[@user-hs9to6dd9j]

pls what's the using constraints different from using conditions

[@2dsingerofgorillaz907]

Please do more of the commercials !! Please oh please please please