This is a layered model of system construction (design) where a single component references others only through their (public/export) interfaces . The horizontal structure relates different components of same realm that can play the same role in the same layer.
What is composition model?
This is a layered model of system construction (design) where a single component references others only through their (public/export) interfaces . The horizontal structure relates different components of same realm that can play the same role in the same layer.