Question: what is the difference between uml 1.x and uml 2.x?
Answer: Action and control nodes differ when UML 1.0 and UML 2.0 are compared. ... A component in UML 2.0 is specially notated with a class symbol that does not have two rectangles of which define it. Component by definition in UML 2.0 is a structured class which comes with a collaboration of elements in its internal structure.