The document presents information on the Spiral Model software development process. It discusses that the Spiral Model combines elements of the prototype model and waterfall model. It involves dividing the process into task regions like customer communication, planning, risk analysis, engineering, and construction. Each task region results in further refinement through iterations of the spiral. The Spiral Model allows for risk analysis and adding new features throughout the process.

1. Presentation on:
Spiral Model
Prepared by: Bina Gupta
BIM 6th semester
BIM Department
HSM
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2. Contents
• Why Spiral model ?
• Introduction
• Phases
• Advantages
• Disadvantages
• References
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3. Why Spiral model???
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4. Why Spiral model???
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5. Why Spiral model???
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6. Why Spiral model???
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7. Introduction
• The Spiral Model is a type of software
development model which was first
proposed by Boehm.
Dr. Barry W. Boehm.
TRW Professor of Software Engineering. Organization. University of Southern 09/23/14 California. 7

8. In this system development method, we combine
the features of both, prototype model and waterfall
model.
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9. Introduction
• In Spiral model we can arrange all the
activities in the form of a spiral.
• A spiral model is divided into number of
framework activities, called task regions.
• Typically, there are between three and six
task regions
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10. Introduction
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11. Introduction
• Customer communication
tasks required to establish effective
communication between developer and
customer.
• Planning
tasks required to define resources, timelines,
and other project related information.
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12. Introduction
• Risk analysis
tasks required to assess both technical
and management risks.
• Engineering
tasks required to build one or more
representations of the application.
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13. Introduction
• Construction and release
tasks required to construct, test, install,
and provide user support (e.g.,
documentation and training).
• Customer evaluation
tasks required to obtain customer feedback
based on evaluation of the software
representations
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14. Phases of Spiral model
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15. Phases of Spiral model
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16. Phases of Spiral model
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17. Phases of Spiral model
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18. Phases of Spiral model
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19. Advantages
1. High amount of risk analysis hence,
avoidance of Risk is enhanced.
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20. Advantages
2. Good for mission-critical projects.
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21. Advantages
3. Strong approval and documentation
control.
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22. Advantages
4. Additional Functionality can be added at a
later date.
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23. Disadvantages
1. Can be a costly model to use.
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24. Disadvantages
2. Risk analysis requires highly specific
expertise.
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25. Disadvantages
3. Project’s success is highly dependent on
the risk analysis phase.
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26. References
• http://www.buzzle.com/articles/spiral-life-cycle-model.
html
• http://istqbexamcertification.com/what-is-spiral-model-advantages-
disadvantages-and-when-to-use-it/
• http://www.technotrice.com/what-is-spiral-model-software-
engineering/
• http://www.cavehill.uwi.edu/staff/eportfolios/paulwalcott/c
ourses/comp2145/2009/spiralmodel.htm
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27. Any questions
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