Download PROSA/SA/M-USE Intensive course 1

PROSA/SA/M-USE Intensive course
23
3.4.2 Transition
Transition models changing of system state. A transitions happens
if a certain condition is true. When a transition is made, the
transition actions will be executed.
TRANSITIONS
TRANSITIONS REPRESENT THE MOVEMENT OF THE SYSTEM
FROM ONE STATE TO ANOTHER
- TRANSITIONS (LOGICALLY) TAKE NO TIME
- MULTIPLE TRANSITIONS TO/FROM A GIVEN STATE ARE PERMISSIBLE
- TRANSITIONS HAVE TWO PARTS: CONDITION AND ACTION
CONDITIONS
TRANSITION CONDITIONS CAUSE THE SYSTEM TO MOVE
FROM ONE STATE TO ANOTHER
CONDITIONS MAY INCLUDE:
- EXTERNAL OR INTERNAL CONTROL SIGNALS
- ABSOLUTE OR RELATIVE DATA VALUES
- TIME SIGNALS
ACTIONS
TRANSITION ACTIONS ARE CARRIED OUT BY THE SYSTEM AS IT
MOVES FROM ONE STATE TO ANOTHER
ACTIONS MAY INCLUDE:
- ISSUING CONTROL SIGNALS
- SETTING TIMERS
- ACTIVATING OR DEACTIVATING CONTINUOUS TRANSFORMATIONS
- TRIGGERING ONE SHOT TRANSFORMATIONS
3.16 Transitions.
3.4.2.1 Condition
(C) Copyright Insoft Oy