Le 25/05/2011 14:55, Ian Walls a écrit : > Further thoughts? Am I missing something critical (I have this > nagging feeling I am). yes, just one: isn't this DAG achieved by the DBIx::Class schema Chris want(ed) to use ? -- Paul POULAIN http://www.biblibre.com Expert en Logiciels Libres pour l'info-doc Tel : (33) 4 91 81 35 08