Notification when deleting attributes

[novikovigor]

Hello again!
There are classes "A", "B", "C" etc with attributes "a", "b" and "c". I need to create invisible one-way relationships "b" => "a" and "c" => "a" (it may be connector or other object), single purpose of  this relationships is notify user about existing dependencies when he tries to modify/delete attribute "a" or delete class "A".
Is there any way in EA to implement this?

[g.makulik]

May be writing an AddIn could help with this.

[Geert Bellekens]

I would use tagged values of type RefGUID to link the attributes.

Notification is something you'll need to take care of in the OnPreDelete... events in your add-in.

Geert