Figure 2: Spiral Life Cycle
Prototyping is used as a mechanism of risk reduction. However,
it is difficult to convince customers that the evolutionary approach
is manageable. If a great risk is not discovered, problems will
certainly occur.
2.3 Compare Design Methods - The
Original Methodology
The methodology to compare development models used in this
work is based on a methodology proposed to compare design
methods called CDM, in this section we describe some of the
details of that work.
The methodology of comparison of development methods CDM
(Compare Design Methodologies) proposed by Song and
Osterweil [12] is used as a support to the identification of qualities
and problems in the studied methodologies. CDM uses techniques
of modeling processes for software methods classifying the
components and analyzing the functionalities in a hierarchical
decomposition. The similar components of the methods are