From a functional. perspective; an information system is a technologically implemented medium. for the purpose of recording, storing, and disseminating linguistic expressions. as well as for the supporting of inference making. From a structural. perspective; an information system consists of a collection of people, processes, data, models, technology and partly formalized language, forming. a cohesive structure which serves some organizational purpose or function. The functional definition has its merits in focusing on what actual users -.