Write difference b/w waterfall model and spiral (agile)model

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Write difference b/w waterfall model and spiral (agile)model..

Answer / bhuvana rakesh

Water fall model is a sequential step of processeds
follewed. It starts with requirement gathering,analysis,
design, coding, implementation, maintanence. You always
finish one process and go to next. You cannot go backwards.

Spiral model mainly invloves risk analysis. You gather the
requirements analyse the risk then you engineer the code
and further implement. In a spiral the radius indicates the
project cost and the spiral of the sector indicates the
progress.

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Write difference b/w waterfall model and spiral (agile)model..

Answer / vaishali

The waterfall model is a sequential software development process, in which progress is flowing downwards (like a waterfall) through the phases of Conception, Initiation, Analysis, Design (validation), Construction, Testing and Maintenance.After-the-fact changes are costly.

The spiral model is a software development process combining elements of both design and prototyping-in-stages, in an effort to combine advantages of top-down and bottom-up concepts. The spiral model is intended for large, expensive and complicated projects.

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Write difference b/w waterfall model and spiral (agile)model..

Answer / guest

In water fall model, prototype is not make. It take long
time for each of SDLC stage.
Spiral model is very quick model where prototype can be made
& if customer find to meet his requirement then s/w get
developed.

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