i have a backend to establish many2many relations between objects.
the relations are all bi-directional. for the storage i use a
PersistentMapping, keys are relation names (strings), values
are PersistentLists that hold the (globaly uniqe) oids of the
related objects (strings also).

now my question: regarding performance and having conflict errors
in mind (an object might well be related to several thousand others,
such a PersistentList objectwould be that big then) - is it wise to
use these two classes or is there something "better" to use?
(any hints are ok, i'll gladly do the rtfm then :)

thanks in advance,
juergen herrmann

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