Software Engineering

11.3  Performance allocation ................................................................................... 198
11.3.1    Allocate performance budgets .................................................... 199
11.3.2    Allocate resource budgets .......................................................... 199
11.4  Architectural assessment ................................................................................ 200
11.4.1    Assess requirement fulfillment ................................................... 200
11.4.2    Assess software performance ..................................................... 200
11.4.3    Assess architectural complexity .................................................. 200
11.4.4    Assess optimization opportunities............................................... 200
11.5  Establish the functional architecture ................................................................ 200
Functional analysis and allocation is the practice that transforms the software 
requirements into a functional architecture. Functional analysis is the first step in 
exploring the customers’ problem domain and deriving a design solution. The oper-
ational activities assigned to the software product represent complex functions that 
need to be decomposed for which a structural design solution is pursued. The func-
tional analysis technique involves the following fundamental tasks:
1. 
Complexity analysis
—evaluation of a function to determine if it warrants further 
simplification by decomposing the function into subfunctions. The decomposi-
tion of a function results in the identification of smaller, less-complex functions 

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