avoiding circular reference with mandatory connection
Hi,
I have got two tables, they are really similar, one represent the consumption of A with his attributes, not very different from the consumption of B, but A and B cannot become the same table.
A and B have in common 2 tables (groups and Products) with all their personal details.
I' d like to make a pivot table with element of Groups and Products,so it's correct to use them as the link between A and B and I cannot unify Groups and Products because they are totally different.
I want to avoid the circular reference, but I cant understand how.
