Software Engineering



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Software Engineering Architecture-driven Software Development ( PDFDrive )

10.4.2 
Behavior model
The behavior model provides decisive information that supports the specification 
of functional components and units. It expresses a complete, precise representation 
of the software behavior in a notation that eliminates conjecture, assumptions, or 
speculation. The behavior model may be a static or dynamic model of the software 
product execution of data processing transactions and identifies the responses to 
potential data transformation results, operator errors, and hardware malfunctions.
The behavior model is essential to the software engineering activity because it 
provides an unambiguous expression of the various data processing transactions 
that must be performed. The behavior model forms the basis for software design, 
enabling design alternatives to be evaluated and resolved. It provides the design 
framework from which the functional timeline and resource utilization profile are 
formulated. The functional behavior model describes the:

  Sequence of functions that must be performed (functional flow).

  Data flow among the software product and external systems, applications, or 
operators (data flow).

  Data flow among functions or functional interfaces (data flow).

  Business rules or control logic that determine the execution flow among condi-
tional functional sequences (control flow).

  Resources necessary to accomplish each function (resource utilization).
Control logic can be associated with the result of a function and is modeled as a 
function that terminates with a selection among multiple functional flow sequences. 
The selection of which behavioral path to proceed to execute may be deterministic 



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