Bug 151661

Summary: Would like to be able to model association classes
Product: [Applications] umbrello Reporter: mgolden
Component: generalAssignee: Umbrello Development Group <umbrello-devel>
Status: RESOLVED DUPLICATE    
Severity: wishlist CC: okellogg
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description mgolden 2007-11-01 00:54:20 UTC 
Version:            (using KDE KDE 3.5.8)
Installed from:    Ubuntu Packages

I quite frequently use association classes.  An association class "hangs off of" or modifies a relationship between two other classes.  In the diagram on the URL below, there is a many-to-many relationship between flights and frequentfliers.  When a frequentflier boards a flight, she can get some arbitrary mileagecredit (determined in some unspecified way).  The mileagecredit modifies the relationship between the frequentflier and the flight - it has no existence outside of that relationship.

In UML, such a class is shown as a dotted line off of the line connecting the two "main" associated classes.

http://www.ibm.com/developerworks/rational/library/content/RationalEdge/sep04/bell/bell_fig11.jpg

(This is similar to bug 121725.)  

P.S.  I really like Umbrello.  Intuitive and immediately useful.
Comment 1 Oliver Kellogg 2012-02-14 06:29:03 UTC 

*** This bug has been marked as a duplicate of bug 57588 ***