[Uml-devel] [Bug 125146] New: relationships for entities do not live outside of an entity relationship diagram.

[Travis Hein]

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http://bugs.kde.org/show_bug.cgi?id=125146         
           Summary: relationships for entities do not live outside of an
                    entity relationship diagram.
           Product: umbrello
           Version: 1.5.2
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: umbrello-devel.kde.org
        ReportedBy: travis33 travnet org


Version:           1.5.2 (using KDE KDE 3.5.2)
Installed from:    Compiled From Sources
Compiler:          gcc (GCC) 3.3.4 
OS:                Linux

I have been using the entity relationship model the most. General comments are tt is a good interface, and does good diagrams.

I would like to see relationships between entities, in an entity relationship diagram, more related to an entity, so that if I create a second entity relationship diagram, and would like to include entities (that may have already been defined on other diagrams, that have relationships), these relationships could also be populated, or chosen to be shown on the second diagram as well.

Steps to reproduce:

create a new entity relationship diagram (entity_one_diagram)
create three entities on this diagram A, B,C
create relationship from A -> B   and from B -> C
create a second entity relationship diagram (entity_two_diagram)
drag the entities (we created from the first diagram) from the entity relationship model onto the new ERD.

The entities show up ok, but the relationship is not there.

For larger models where a a couple of tables are involved in many relationships, such as in a lookup table, it would be handy to see the relationships we have defined before, between entities. 
A good use case of this is if i had a code table, and 5 entity relationhip diagrams, each of them have many tables that relate to the code table in a couple spots.
Now, i would like to visually see "what things reference code table"
I would create a new 6th diagram, and import all entities that are related to the code table,
i would know which ones should be imported, since the code table entity would have a child list of the relationships that touch it (for example).

I admit, i am probably trying to abuse the entity relationship modeller as a sort of database modelling tool, but i find it handy to have all the design (for the rest of the application classes) in one tool and to only have to work with (and submit) one xmi file.