$(1)$ Why is communication between the supply chain and pharmacy critical in operating a hospital $($from a financial and clinical stand$-$point$)?$

$(2)$ How would one "optimize" the performance $($financial and clinical$)$ between the supply chain and pharmacy?

$(3)$ What tools are needed $($ordering systems, bar$-$coding systems, electronic medical records, etc...$)$ to do so and what do those systems cost? Where does cost$-$benefit analysis come into play when selecting such systems?