Methodology : The Rational Statemate Approach : The Top-Down System Specification : Functional Decomposition - System Levels > 2

Functional Decomposition - System Levels > 2

Proceeding beyond System Level 2, the structure becomes completely dependent on the system and no further generic approach can be applied.

For general guidance, remember the primary consideration is readability. From the Activity-chart, the reader should know what the function is.

Draw all second and subsequent level Activity-charts with all the inputs on the left and outputs on the right.

Structure the chart in functional modules that: