The essential characteristics of an entity that distinguish it from all other kinds of entities and thus provide crisply defined boundaries from the viewer's perspective.
A unit of work that a role performs. An activity may be decomposed into steps. Activities produce or modify artifacts.
Someone or something outside the system or business that interacts with the system or business.
The baseline at the end of the elaboration phase, at which time the foundation structure and behavior of the system are stabilized.
A description of an archetypal solution to a recurrent design problem that reflects well-proved design experience.
A view of the system architecture ...