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Relation only once between two objects

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Hello,

we are currently refactoring our MEMO implementation in ADOxx. We found out, that we have multiple occasions, where we need multiple connections between the two classes of the same type. Unfortunatly ADOxx does not support more than one relation of the same type between the same two classes. Till now we used some type of intermediate class. For the refactoring however we do not want to use them anymore, because they make the modelling process more complicted than necessary. Image 1 shows how the implementation is before the refactoring. Image 2 the desired presentation after the refactoring. The last image show the error message shown by the modelling toolkit, when creating Image 2.

Is there a possibility to implement this in a better way?
Will it be possible to create more than one relation per two objects any time soon? It would be very important for us.

Best Regards
Oliver Just
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添付ファイル: Image 1.png (6.3k), Image 2.png (5.3k), Image 3.png (7.8k)