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New Post 4/22/2011 7:33 PM
User is offline johnjohn123
9 posts
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Use case diagram- can i connect two actors to the same use case? 

Use case diagram- can i connect two actors to the same use case?

i am writing a use case diagram that represents a registration system; i want to do the following:-
1. To link an Actor(student) to the use case (register in a course). Student ---> register in a course
2. then the use case(register in a course) is linked to the actor (accounting system). regester in a course ---> accounting system.
So is this valid to represent in the use case diagram, i mean to have actor-usecase-actor association.
Best Regard

 
New Post 4/23/2011 12:41 AM
User is offline Kimbo
456 posts
5th Level Poster


Re: Use case diagram- can i connect two actors to the same use case? 

 Hi John,

Yes.

Its important to show the initiating actor and also to show any other actors associated with the use case as well. In the diagram, the initiating actor is to the left and other associated actors are to the right.

Kimbo

 
New Post 4/23/2011 8:01 AM
User is offline johnjohn123
9 posts
10th Level Poster


Re: Use case diagram- can i connect two actors to the same use case? 

thanks for your kind reply; i think the initiating actor can be distinguished from the arrow direction. as the associated actor might come an initiating actor for another scenario .so i am organizing the actors all at the left side of the diagram and below each other. Such as:-

actor 1

actor 2

 

 
New Post 4/24/2011 3:05 PM
User is offline Kimbo
456 posts
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Re: Use case diagram- can i connect two actors to the same use case? 

 Hi John,

UML use case diagrams don't have arrows (I don't think). Its just a simple association. The convention is as I described it but knock yourself out. If that works for you and people understand it.

Kimbo

 
New Post 4/25/2011 5:20 AM
User is offline KJ
243 posts
6th Level Poster


Re: Use case diagram- can i connect two actors to the same use case? 

John,

Kimbo is right, no arrows please.

But if it works for your team as you will see at http://www.agilemodeling.com/style/useCaseDiagram.htm then use it.

I personally dont use arrows for usecase actor relationships.

warm regards,

K

 
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