上游充通大学 SHANGHAI JIAO TONG UNIVERSITY (3)Jacobson (OOSE) Major feature was“use classes Use classes model how a system interacts with users (which might be other systems or end users) Viewing things from the user's perspective drove the design process This made it good at very high-level design. Software EngineeringSoftware Engineering (3) Jacobson (OOSE) Major feature was “use classes” Use classes model how a system interacts with users (which might be other systems or end users) Viewing things from the user’s perspective drove the design process This made it good at very high-level design