Ans : Identification Process
- Functionality modeling: Component identification always starts by decomposing
the business domain problem structure into a well-defined visual model. Data flow
diagram is one of the most popular visual models to depict function oriented
design. - Design module development: The next step is to convert individual elements in
the DFD into a design module. During this process, the design modules need to be
designed to ensure high cohesion and loose inter-module coupling. The modules
that perform similar kind of functionalities and processes qualify for the main
design module. Design modules would then become key function component. - Sub function development: The main functions need to be broken down into sub
functions. Utilities such as, data validation, data conversion, information Jogging
would be good candidates for sub-functions. - Interaction modeling: The input and output elements from DFD can be used to
design the interactions between functions.
Component and Stage Mapping
The following table indicates the component/association identified at each level of the
process:
Stage Component! Association
Functional modeling Data flow diagram
Design module development High level function
Sub function development Sub functions
Interaction modeling Input and output data
