UML 2 Communication Diagrams

Welcome to my UML 2.0 Communication Diagrams tutorial! If you haven't seen my tutorial on Sequence Diagrams check it out first, because in this tutorial I explain Communication Diagrams by comparing them to Sequence Diagrams.

Communication diagrams are used to show links between participants. They focus in on which interactions are triggered and when. They also describe the order of events in all interactions. With the video and the cheat sheet above, you should be able to understand them in no time at all.

[Tavadi]

The zoom is quite irritating, better use the yellow spotlight.
Keep it up, really appreciate your tutorials! 

[akio]

why the last number is 4.2 and not 4.1.6 or 5 ? 9:00

[derekbanas]

I love talking to you guys :)

In an offhanded comment I said that if anyone has any leftover thanksgiving food send it to me if you can figure out where I live. It ends up it isn't that hard to find me.

( I really shouldn't be doing this again, because my wife will kill me this time )

[derekbanas]

In my opinion, use Wordpress because even though the community isn't perfect it is better than the other 2 CMSs. Wordpress themes are largely made with HTML and CSS. You'll need JavaScript to add interactive capabilities and a little PHP, but for the most part you just copy and paste the PHP codes provided by Wordpress. I have over 80 tutorials on making Wordpress themes, plugins, etc.

[derekbanas]

I run a bunch of shopping carts online and write custom investing software. That's why I don't do this to generate work, or ever try to sell anything. This stuff I do on YouTube is just for fun and to help others

[derekbanas]

They provide another way to describe your system. They are valuable because they focus just on interactions and the order of those interactions. I don't often find the need to use them, but I make very detailed sequence diagrams

[derekbanas]

I think I said it right? Is there something specifically that you find confusing about the numbering? I'll try to help

[akio]

you said there is no return arrows, so why you put 4.2 as return message ? (I mean this return arrow in sequence diagram as labaled 4.2 )

[derekbanas]

The Drupal vs. WP thing is just like the Mac vs. PC fight. 22% of new sites are being made using WP vs. Drupal's 2%. I show you how to write the code from scratch in my tutorials.

[derekbanas]

I'm sorry, but I don't get the Gwen Stefani reference. I'm not up on pop culture stuff. I can't remember the last time I listened to popular music. I'm probably the least hip person you know. I also think there are people that watch my videos that have no interest in programming. That does crack me up :)

[derekbanas]

I used to be able to speak German and read Chinese and Japanese, but I have since forgotten most of that. I use a translator so that I'm able to communicate in other languages. More then likely I'm communicating poorly :)

[derekbanas]

Oh, it is just a cheesy Apple iMovie graphic that I used for so long that I just kept using it. You'll love the popup messages I used to use with flowers on them :) I thought it was my voice because I have a terrible cold. I know the Apple stuff is kind of cheesy, but it was free

[oliveryt]

Old (and a little bit outdated), but GOLD. Helped me to understand the decimal notation.

[derekbanas]

Sie sind herzlich willkommen. Ich bin sehr glücklich zu helfen

[derekbanas]

Thank you :) I appreciate the referrals.

[derekbanas]

I'm really not certain. I haven't completely decided on what all I'm covering. Not that many more

[bm-ubzc]

On the last picture, why there is no number on the arrow on the right hand side of 4.4?
And why does 4.1.4 has arrows in two directions, but on the communication diagram only in one direction?

[derekbanas]

Why is that? Did I mess up explaining something?

[mengung]

thank you Derek. Its very useful. i have recommend your videos to all my school mates.

[derekbanas]

That's funny :) When I was in high school that was my nickname. I got it because I played football I played so recklessly that I broke a never ending supply of bones. Finally when I broke my tailbone clean off I stopped playing football