IBM
Contents Index Previous Next



Adaptation


An application generated from an SDL description can be viewed as having three parts:

When adapting the application, the environment functions may have to be specified depending on the integration mechanism used. The environment functions are the place where the two worlds, the SDL system and the physical environment, meet. Signals sent from the SDL system to the environment can be specified to perform any event in the physical environment, and events in the environment are specified to cause signals to be sent into the SDL system.

Figure 718 : The structure of an application

In a distributed system an application might consist of several communicating SDL systems. Each SDL system will become one executable program. The environment functions that has to be written for each SDL system are:


http://www.ibm.com/rational
Contents Index Previous Next