The acronym for the roles for data or material on an activity model. ICOMs are represented by arrows that interconnect activity boxes. They are named using a noun or noun phrase. Input - Data or material used to produce an output of an activity. Control - Data that constrain or regulate the activity.
Controls regulate the transformation of inputs into outputs.
Output - Data or materials produced by or resulting from the activity. It must include the input data in some form. Mechanism - Usually people, machines, or existing systems that provide energy to, or perform the activity. The widely used techniques were designed to capture the processes and structure of information in an organization. An activity, or process, modeling technique.