Software Engineering

10.3  Conceiving the functional architecture ............................................................. 179
10.4  Documenting the functional architecture .......................................................... 181
10.4.1  Functional hierarchy ................................................................... 181
10.4.2  Behavior model .......................................................................... 182
10.4.3  Functional timeline .................................................................... 183
10.4.4  Resource utilization profile .......................................................... 183
10.4.5  Functional specifications ............................................................ 184
10.4.6  Requirement allocation sheet ...................................................... 184
This chapter describes the functional architecture and its various forms of repre-
sentation. It also provides guidance by which the functional architecture is derived. 
Chapter 11 establishes a set of detailed tasks for the functional analysis and 
allocation practice necessary to transform the software requirements specifications 
into the functional architecture. The functional architecture provides a basis for 
deriving the structural configuration and physical architecture for the software prod-
uct. The physical architecture involves the documentation, drawings, diagrams, etc. 
that express the structural configuration of the software product. Among these tasks 
are points of departure that identify linkages to other software engineering tasks, 
such as requirement verification, software analysis to assess design complexity and 
risks, software design synthesis, and architecture control. These links are identified 
within the detailed task descriptions provided in Chapter 11.

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