The following figure shows the typical structure of an application software module at decomposition level 2 The function blocks depict the algorithm structure, while the related state-based system behavior is captured in the Control Activity.
Architectural System Approach: Typical Structure of an Application S/W Module at Decomposition Level 2Note: Starting at this level the information flows defined in the higher hierarchies should be “filled” with the respective details “bottom-up.” This ensures that only data are defined, which are actually used within the model.