use Red; model User { has Int $!id is serial; has Str $.username is column is rw; has Str $.password is column is rw; has @.vmails is relationship(*.user_id, :model); } model Vmail { has Int $!id is serial; has Int $!user_id is referencing(*.id, :model); has Str $.name is column; has $.user is relationship(*.id, :model); }