Can someone confirm/decline that following relationship in domain model is incorrect (exact relationships are in my assignment)?
I think I should change relationships to correct one (according my assumptions and business model) but everywhere is written that it's strongly not recommended to change domain model.
Changes could be (I suppose that relationship between A and B is correct):
Relationships between A and C from many-to-one to one-to-many
Relationships between B and C from many-to-many to many-to-one
And one more question does one-to-many is just the case on many-to-many (in such case I'll be totally confused)?
Yes I had made changes is provided domain model. I cant tell You the decision why these changes were done - it's the part of my submitted assignment. Concerning results - there is still no any changes (TAKEN).