> > but if I were you and needed to access by unique id I would
> > first use +Key in the relations:
> > (rel id (+Key +String))
> Ah, that makes sense! But it will only work for my id relation ... but I
> will also access them by 'src' and 'tgt'.
Please note that '+Key' will not change the 'collect'-like behavior of
the Pilog 'db' predicate in that regard. It only creates a unique index
(while '+Ref' maintains a non-unique index).