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Posted Date: 11 Jan 2008 Posted By:: shiva ram Member Level: Silver Member Rank: 0 Points: 2
Responses:
4
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WHAT IS SPIRAL MODEL IN SE?
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Responses
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#178331 Author: Ramachandran Member Level: Bronze Member Rank: 0 Date: 11/Jan/2008 Rating:  Points: 2 |
try this link :
http://courses.cs.vt.edu/csonline/SE/Lessons/Spiral/index.html
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#178507 Author:  www.DotNetVJ.com Member Level: Gold Member Rank: 29 Date: 11/Jan/2008 Rating: Points: 2 |
There are four phases in the "Spiral Model" which are: Planning, Evaluation, Risk Analysis and Engineering. These four phases are iteratively followed one after other in order to eliminate all the problems, which were faced in "The Waterfall Model". Iterating the phases helps in understating the problems associated with a phase and dealing with those problems when the same phase is repeated next time, planning and developing strategies to be followed while iterating through the phases. The phases in "Spiral Model" are:
Plan: In this phase, the objectives, alternatives and constraints of the project are determined and are documented. The objectives and other specifications are fixed in order to decide which strategies/approaches to follow during the project life cycle.
Risk Analysis: This phase is the most important part of "Spiral Model". In this phase all possible (and available) alternatives, which can help in developing a cost effective project are analyzed and strategies are decided to use them. This phase has been added specially in order to identify and resolve all the possible risks in the project development. If risks indicate any kind of uncertainty in requirements, prototyping may be used to proceed with the available data and find out possible solution in order to deal with the potential changes in the requirements.
Engineering: In this phase, the actual development of the project is carried out. The output of this phase is passed through all the phases iteratively in order to obtain improvements in the same.
Customer Evaluation: In this phase, developed product is passed on to the customer in order to receive customer’s comments and suggestions which can help in identifying and resolving potential problems/errors in the software developed. This phase is very much similar to TESTING phase.
The process progresses in spiral sense to indicate iterative path followed, progressively more complete software is built as we go on iterating through all four phases. The first iteration in this model is considered to be most important, as in the first iteration almost all possible risk factors, constraints, requirements are identified and in the next iterations all known strategies are used to bring up a complete software system. The radical dimensions indicate evolution of the product towards a complete system.
Thanks -- Vijaya Kadiyala
http://www.DotNetVJ.com
Microsoft MVP
Me & My Little Techie
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#178508 Author:  HimaBindu Vejella Member Level: Gold Member Rank: 42 Date: 11/Jan/2008 Rating: Points: 2 |
http://searchsoftwarequality.techtarget.com/sDefinition/0,,sid92_gci755347,00.html
http://himabinduvejella.blogspot.com
http://sysntaxhelp.com/asp.net
http://groups.google.com/group/mugh
Hima's Tech Blog
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| #178509 Author: HimaBindu Vejella Member Level: Gold Member Rank: 42 Date: 11/Jan/2008 Rating: Points: 2 |
Read this as well. http://en.wikipedia.org/wiki/Spiral_model
http://himabinduvejella.blogspot.com
http://sysntaxhelp.com/asp.net
http://groups.google.com/group/mugh
Hima's Tech Blog
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