Speedwise, you should use many2many if you plan to search the referee by the refereed. If you only need the refereed after you already have the referee you can use list:reference. If you are on GAE list:reference is better because native and GAe has no joins.
On Nov 9, 2:43 pm, Carlos <carlosgali...@gmail.com> wrote: > Hi all, > > I am wondering, with respect to many-to-many relationships, is it > better to use "list:reference" or a separate table (with foreign > keys)?. > > I refer to 'simple' many-to-many where no extra attributes need to be > stored (otherwise the separate table is the only choice). > > Thanks, > > Carlos