uml diagram types with examples for each type of uml diagrams.pdf

4/3/14, 9:07 PMUML Diagram Types With Examples for Each Type of UML Diagrams

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The Creately Blog

2 February 2012 Nishadha

UML stands for Unified Modeling Language which is used in object oriented software engineering. Al-though typically used in software engineering it is a rich language that can be used to model an applica-tion structures, behavior and even business processes. There are 14 UML diagram types to help youmodel these behavior. They can be divided into two main categories: structure diagrams and behavioraldiagrams. All 14 UML diagram types are listed below with examples, brief introduction to them and alsohow they are used when modeling applications.

You can draw UML diagrams online using our software, or check out some UML diagram examples atour diagramming community.

List of UML Diagram TypesTypes of UML diagrams with structure diagrams coming first and behavioral diagrams starting from posi-tion 8. Click on any diagram type to visit that specific diagram types description.

Class DiagramComponent DiagramDeployment DiagramObject DiagramPackage DiagramProfile DiagramComposite Structure DiagramUse Case DiagramActivity DiagramState Machine DiagramSequence DiagramCommunication DiagramInteraction Overview DiagramTiming Diagram

Home » diagrams » The Complete Guide to UML Diagram Types with Examples

The Complete Guide to UML Diagram Types withExamples

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UML Diagram Types

Structure diagrams show the things in a system being modeled. In a more technical term they show dif-ferent objects in a system. Behavioral diagrams shows what should happen in a system. They describehow the objects interact with each other to create a functioning system.

Class DiagramClass diagrams are arguably the most used UML diagram type. It is the main building block of any object orientedsolution. It shows the classes in a system, attributes and operations of each class and the relationship betweeneach class. In most modeling tools a class has three parts, name at the top, attributes in the middle and operationsor methods at the bottom. In large systems with many classes related classes are grouped together to to createclass diagrams. Different relationships between diagrams are show by different types of Arrows. Below is a imageof a class diagram. Follow the link for more class diagram examples.

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http://creately.com/blog/wp-content/uploads/2012/01/UML-Class-Diagram-Example.png

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Los Componentes del modelo

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UML Class Diagram with Relationships

Component DiagramA component diagram displays the structural relationship of components of a software system. These aremostly used when working with complex systems that has many components. Components communi-cate with each other using interfaces. The interfaces are linked using connectors. Below images shows acomponent diagram.

Simple Component Diagram with Interfaces

Deployment DiagramA deployment diagrams shows the hardware of your system and the software in those hardware. Deploy-ment diagrams are useful when your software solution is deployed across multiple machines with eachhaving a unique configuration. Below is an example deployment diagram.

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http://creately.com/blog/wp-content/uploads/2012/01/Component-Diagram-Example-UML.png

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UML Deployment Diagram ( Click on the image to use it as a template )

Object DiagramObject Diagrams, sometimes referred as Instance diagrams are very similar to class diagrams. As classdiagrams they also show the relationship between objects but they use real world examples. They areused to show how a system will look like at a given time. Because there is data available in the objectsthey are often used to explain complex relationships between objects.

UML Object Diagram Example

Package DiagramAs the name suggests a package diagrams shows the dependencies between different packages in asystem. Check out this wiki article to learn more about the dependencies and elements found in packagediagrams.

http://creately.com/diagram/example/gsx1cnemh/UML+Deployment+Diagram

http://creately.com/blog/wp-content/uploads/2012/01/UML-Object-Diagram.png

http://en.wikipedia.org/wiki/Package_diagram



Package Diagram in UML

Profile DiagramProfile diagram is a new diagram type introduced in UML 2. This is a diagram type that is very rarelyused in any specification. For more detailed technical information about this diagram type check this link.

Basic UML Profile Diagram structure

Composite Structure DiagramComposite structure diagrams are used to show the internal structure of a class. For a detailed explana-tion of composite structure diagrams click here.

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http://www.uml-diagrams.org/profile-diagrams.html

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http://www.uml-diagrams.org/composite-structure-diagrams.html



A simple Composite Structure Diagram

Use Case DiagramMost known diagram type of the behavioral UML diagrams, Use case diagrams gives a graphic overviewof the actors involved in a system, different functions needed by those actors and how these differentfunctions are interacted. It’s a great starting point for any project discussion because you can easily iden-tify the main actors involved and the main processes of the system. Click through to read more aboutuse case diagram elements and templates.

Use Case diagram showing Actors and main processes

Activity DiagramActivity diagrams represent workflows in an graphical way. They can be used to describe business work-flow or the operational workflow of any component in a system. Sometimes activity diagrams are used asan alternative to State machine diagrams. Check out this wiki article to learn about symbols and usage ofactivity diagrams.

http://creately.com/blog/wp-content/uploads/2012/02/composite-Strcuture-Diagram-UML1.jpeg

http://creately.com/diagram-type/use-case

http://creately.com/blog/wp-content/uploads/2012/01/Use-Case-Diagram.png

http://en.wikipedia.org/wiki/Activity_diagram



Activity Diagrams with start, end, processes and deci-

sion points

State Machine DiagramState machine diagrams are similar to activity diagrams although notations and usage changes a bit.They are sometime known as state diagrams or start chart diagrams as well. These are very useful todescribe the behavior of objects that act different according to the state they are at the moment. BelowState machine diagram show the basic states and actions.

State Machine diagram in UML,

sometime referred to as State or

State chart diagram

Sequence DiagramSequence diagrams in UML shows how object interact with each other and the order those interactions

http://creately.com/blog/wp-content/uploads/2012/01/Activity-Diagram.jpeg

http://creately.com/blog/wp-content/uploads/2012/01/State-Machine-Diagram.png



occur. It’s important to note that they show the interactions for a particular scenario. The processes arerepresented vertically and interactions are show as arrows. This article explains the purpose and the ba-sics of Sequence diagrams.

Sequence Diagrams in UML shows the interaction be-

tween two processes

Communication DiagramCommunication diagram was called collaboration diagram in UML 1. It is similar to sequence diagramsbut the focus is on messages passed between objects. The same information can be represented usinga sequence diagram and different objects. Click here to understand the differences using an example.

Communication Diagram in UML

Interaction Overview DiagramInteraction overview diagrams are very similar to activity diagrams. While activity diagrams shows a se-quence of processes Interaction overview diagrams shows a sequence of interaction diagrams. In simpleterm they can be called a collection of interaction diagrams and the order they happen. As mentioned be-

http://creately.com/blog/diagrams/the-basics-the-purpose-of-sequence-diagrams-part-1/

http://creately.com/blog/wp-content/uploads/2012/01/Sequence-diagram-UML.png

http://www.sparxsystems.com/resources/uml2_tutorial/uml2_communicationdiagram.html

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fore there are seven types of interaction diagrams, so any one of them can be a node in an interactionoverview diagram. ( img – http://www.sa-depot.com/?page_id=645 )

Interaction overview diagram in UML

Timing DiagramTiming diagrams are very similar to sequence diagrams. They represent the behavior of objects in a giv-en time frame. If its only one object the diagram is straight forward but if more then one objects are in-volved they can be used to show interactions of objects during that time frame as well. ( img –http://blog.tangcs.com/2008/01/10/uml-2-diagrams/ )

http://www.sa-depot.com/?page_id=645

http://creately.com/blog/wp-content/uploads/2012/02/Interaction-Overview-Diagram-UML.jpg

http://blog.tangcs.com/2008/01/10/uml-2-diagrams/



Timing Diagram in UML

Mentioned above are all the UML diagram types. The links given in each section explains the diagramsin more detail and covers the usage, symbols etc. UML offers many diagram types and sometimes twodiagram can explain the same thing using different notations.Check this blog post to learn which UML di-agram best suits you.If you have any questions or suggestions feel free to leave a comment.

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Tags : UML 2 diagram types, UML behavioral diagrams, UML diagram types, UML interaction dia-grams

About the Author

About NishadhaSoftware engineer turned tech evangelist. I handle marketing stuff here at Creately including writing blogposts and handling social media accounts. In my spare time I love to read and travel. Check out mypersonal blog Rumbling Lankan where I write about online marketing stuff. View all posts by Nishadha →

74 thoughts on “The Complete Guide to UML Diagram Types with Examples”

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Thomas

Very Helpful Thanks……

18 April 2012 at 4:32 am

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Kakoli Das

its very helpful n easy 2 understand,thanx a lot…………

28 April 2012 at 3:18 pm

sahilsharma

very helpful…………could have been better for beginners if each symbols were explained first….

12 May 2012 at 6:07 am

Remya S

very helpful to me, thankzzzzzzzz

23 July 2012 at 9:05 pm

bittu

its really helping us to provide a lot of info we are gaining from it….

15 August 2012 at 5:12 pm

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Stig

Andersen

This is a very helpful overview with manyuseful links. Thanks alot for your effort.

27 September 2012 at 11:55 pm

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It’s easy to understand… Thanks a lot…

2 October 2012 at 3:42 am

satya

very helpful …

2 October 2012 at 11:40 pm

Arnab

Chakraborty

Looking for such documents for a long. Will also help me to conduct the training programs as well.Thanks a lot.


anish

simple and helpfull………Thanks a lot.


indhu

its very helpful to me……….


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Thankz its usefull 4 my studies.. thankz u….

2 November 2012 at 6:46 am

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gowri

super,its easy to understand for student

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super and easy to understand


Clark

Good morning, Nishadha. I like the presentation of this information since it provides brief explanationsand examples and links to greater detail.I did notice that a few of your shortcut links up top are broken. Near the very beginning of your UMLdiagram types page you provide a numbered list of diagram types. Each link is supposed to take me tothe brief explanation and example, but numbers 7, 10, and 14 don’t work. Number 13 actually takesme to the location for number 14.Overall, this is a convenient presentation. Thanks.

14 December 2012 at 1:06 am

Nishadha

Good morning, Clark. I apologize for the mistakes. Thanks for taking the time to point them out. I havecorrected them now. Enjoy the article and hope you got some value from it.


sunnykandola

its really helpful … thanks


nishchala

nice one…really useful


Varun

Hello Nishadha,Thank you for the very nice article.I have a question, is it possible in any way that we can develop logic using UML for example we candevelop a logic using MATLAB.Thanks.

5 January 2013 at 3:02 pm

Hi Varun,


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Nishadha I haven’t used MATLAB so not sure what exactly you mean by develop logic using UML. Can youexplains it a bit further ?

Abi

hi nishadha,its very useful and very easy for understanding..Thanks

22 January 2013 at 3:36 am

parikshita

Hello Nishadha,Thank you for the very nice article.Cheers!!PP


Puvanarajan

Thank you so much….


gopinath

thanksvery helpful

1 February 2013 at 4:34 pm

iswarya

really helpful… thank yu so much :):)

13 February 2013 at 10:42 am

krish

thank u lots…its v helpful to understand:-)

6 March 2013 at 6:02 pm

shivamtiwari

its very helpful uml diagram

1 April 2013 at 10:17 pm

Its very helpful site

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nisha

thank u very much 4 ur article… its very helpful

6 April 2013 at 5:58 pm

Marzio

Great explanation! My compliments. Simple and expressive.

20 April 2013 at 3:55 pm

Miguel

Hi,what would you suggest if you want to build a diagram in which would be displyed a student grades;minimum grades to to pass a exam; final result pass or fail

28 April 2013 at 10:50 pm

josphat

superb.this page is eye catching.kudos quality stuff

5 May 2013 at 1:06 am

Balambigai

Simple and easy to understand

7 May 2013 at 9:47 am

KankerServiks

many types of UML diagramsinformation contained highly detailed easy to understand

14 May 2013 at 2:03 am

Fabio

Hi Nishadha , I find this very helpful and easy to understand, but I have a question about the numberof Diagram, I read this http:/www.omg.org/gettingstarted/what_is_uml.htm and I found ” ..representingthe results using UML 2.0′s thirteen standard diagram types.” 13 or 14 ?

28 May 2013 at 11:08 am

Hi Fabio,

28 May 2013 at 2:29 pm











Nishadha As I have listed down in the article, there are 14 UML diagram types in UML 2.0

Madeea

thanks this article is very helpful and easy to understand…great work

6 June 2013 at 5:35 pm

anonimous

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14 June 2013 at 8:54 am

Shobhit

That was pretty informative stuff, and you sire explained it pretty easily!

15 July 2013 at 10:55 pm

sachin


3 August 2013 at 5:11 am

DIYA

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24 August 2013 at 7:36 pm

Avadhut

Great stuff,Thanks a lot.


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Shahbaz

Most Effective notes


suhas

this very useful for the understanding the uml concept


R.S.

Very helpful for beginners and easy to include in interview facing process.

4 October 2013 at 12:52 am

York

hi man, very nice job. thx a lot~


Carci

This site is very helpful! Thank You very much!!!!!


Tinda

much impressive task for learning


Bhavin

Have seen many UML diagram before, however, the way to put it all together and characterize them isvery important as the author has done it here. Very nice way to represent and identify them. Enjoyedit…


felixi

i love your piece on UML, hope it help me with my exams tomorrow. Really appreciate yourgenerousity














deepika

its very useful….without book we easily got …idea

kiqobad

Hi Nishadha ,Have seen many UML diagram before, however, the way to put it all together andcharacterize them is very important as the author has done it here. Very nice way to represent andidentify them.thanks very thanks…of iran kelardasht good time


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Thank you. Nice Article.


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Hivery help in business plan and safe time.


saran

it’s very useful for me, Thanks a lot


MariaBarket

tomorrow is my exam .. n it helps me a lot ..stay blessed

17 February 2014 at 2:46 am

Carla

Very nice and clean explanation. UML made easy!Thank you.

2 March 2014 at 4:24 am

erwik

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Quite useful even if we don’t need all schemas

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Osama

This is really an awesome article.. thanks buddy

1 April 2014 at 1:16 pm

Bashir

Hi Nishada,what a very helpful note you have given! I have a question. Pls can UML diagrams be used for theunderstanding of problem domain? if yes, please explain.Thanks.Kind regards

3 April 2014 at 4:24 am



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