in the case where the diagram only shows class diagram for Storage, i think arrows from external components pointing in can be omitted. Especially when the arrows contain multiplicity, it is difficult to verify the correctness without knowing where it is pointing from.
in the case where the diagram only shows class diagram for Storage, i think arrows from external components pointing in can be omitted. Especially when the arrows contain multiplicity, it is difficult to verify the correctness without knowing where it is pointing from.