The distribution system modeling and analysis pdf’s extensions were designed to support systems engineering activities. SysML offers systems engineers several noteworthy improvements over UML, which tends to be software-centric.
SysML’s semantics are more flexible and expressive. SysML reduces UML’s software-centric restrictions and adds two new diagram types, requirement and parametric diagrams. Consequent to these enhancements, SysML is able to model a wide range of systems, which may include hardware, software, information, processes, personnel, and facilities. SysML is a comparatively little language that is easier to learn and apply. Since SysML removes many of UML’s software-centric constructs, the overall language measures smaller both in diagram types and total constructs. SysML allocation tables support common kinds of allocations.