[Uml-user] Entity Relationship Diagrams in 1.4

[Sven Bauhan]

On Friday 07 January 2005 12:13, Dr Robert Sanderson wrote:
> >>> You can use a class diagram instead.
> >
> > Well, you should use a class diagram really. The ERD is just a subset of
> > Class Diagram with a different "graphic" representation, isn't it?
>
> Almost.  But most importantly for my purposes -is- the different graphic
> representation.
>
> In an ERD you can have a trinary+ relation as a different type to an
> entity, normally represented as a diamond.
>
> So, if you'll excuse the ascii:
>
> [A] --<>-- [C]
>
>       [B]
>
In UML2 this is also part of the class diagrams, but not yet implemented in 
umbrello.
These features are especially for database visualization, as this should not 
be used for OOD.