Answer / sindhuja rao

spiral model was developed by garry boehm.It combines the
systematic aspects of the water fallmodel & itertative
nature of the prototyping model.It is used for the projects
which involves greater risk.

Answer / rajeshwar rao

Spiral model is one of the software development lifecycle
model. it is very easy to understand both the developers
and customers.and react the risk at each eliviantry level
it uses reduction of the mechanisam.it is divided into no
of frame work activates. its called as spiral model.

Answer / nani

when the requirements are clear and implementation was
problem then we go for spiral model.


please let me know if it was wrong.

regards
Nani

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