> > That way you can issue queries like db.trains.company == 'amtrack' that > are - usually - faster than filtering records through joins.
you can't do db.trains.company == 'amtrack' because company is a reference field --
> > That way you can issue queries like db.trains.company == 'amtrack' that > are - usually - faster than filtering records through joins.
you can't do db.trains.company == 'amtrack' because company is a reference field --