I have super type (Super_A) with six sub types. Four of the sub types have a second super type (Super_B). All sub type classes will be sub types of Super_A. How do I formalize the relationships to avoid having two identifying attributes in the sub types that are related to both super types? Even better would there be a way to formalize the super type relationship for Super_B so that it’s identifier would come from its sub types?
In general, is there a reason why the ability to add a prefix is not included in the formalization dialog for super / sub type relationships?
Attributes can be combined by selecting one of the attributes, right click -> Combine With… and selecting the attribute that you want to collapse into the attribute that was selected.
To answer the second part of your question, I don’t know of any reason historically why adding a prefix is not part of the formalization wizard for sub/super associations. But of course it is possible to modify the prefix (or use the prefix from the super class) through the properties view.