Ufyukyu

1 I show you my following problem .. I basically have the following database .. to understand it I think a practical example is the best way .. I have a building site where N entrusters can intervene, these N trustees can in turn delegate N Sub-Affidiates. then pulling the sums I have some relationships between the three tables (which in my language are "Cantiere" "Affidataria" "SubAffidataria") Building site 1 ------> N Reliable Relater 1 -----> N Sub-Affidiates Having said that my problem is the following I have to do a control panel in which for each construction site I have to show the carers and the sub-contractors. I would like to point out that the Sub-Affiliates do not have "direct" links with the Shipyards, but they have the FK of the Affilatories I...