one item - multiple collections


I just want to bring up a rather simple and hopefully not all too strange question, but it repeatedly turned up over the last months in course of our project design:

As far as I can see there is no way to assign multiple collections to one item, viz. making one item part of more than one collection, or? Is there a possibility to do this, or has such an approach been considered as "bad design" right from the outset?

Any kind of feedback or thought to this problem is highly appreciated :)


This came up recently on the mailing list, though I'm afraid the conclusion won't help you: