Explain about spiral model, Software Engineering

Q. Explain about Spiral Model?

The Spiral model is one of the well-liked model used for large projects. This model was projected by Boehm in 1988 and it focuses on minimizing the risk through the use of prototype. We are able to view the Spiral Model as a waterfall model with each stage preceded by Risk analysis stage. The model is separated into four quadrants each with a specific purpose as shown in the fig. Every spiral represents the progress made in the project. In the first quadrant objectives and alternative means to develop product and constraints imposed on the products are identified. The next quadrant compact with identification of risk and strategies to resolve the risks. The third bottom right quadrant goes after the waterfall model. In the bottom left quadrant customer calculates the product requirements are further refined. If at a few stage during the project risk cannot be resolved project is terminated. The model is utilized if the requirements are very complex or several new technology is being introduced by the company.


1. The model tries to resolve every possible risk involved in the project.

2. Every phase of the model enhances the quality of the product.


1. The model is suitable merely for large size projects because in some cases the cost of risk analysis may perhaps exceed the actual cost of the project.

2. Expertise in risk management along with project management is essential.

843_Explain about Spiral Model.png

  Spiral Model

Posted Date: 7/26/2013 3:22:18 AM | Location : United States

Related Discussions:- Explain about spiral model, Assignment Help, Ask Question on Explain about spiral model, Get Answer, Expert's Help, Explain about spiral model Discussions

Write discussion on Explain about spiral model
Your posts are moderated
Related Questions
Draw E-R diagram for the following situation An account is a relationship between customer and bank. A customer has a name. A bank has a branch. A customer may have numerous ac

Discuss in details the design steps in transaction mapping. Re-Check the fundamental model. Re-check and refine the DFD for the software. Determine the DFD has either

Level 2 (Repeatable) Organisation satisfies all the requirements of level-1. At this stage, basic project management policies and associated procedures are established. Insti

m2+m3+m5+m7+m12+m8+m9 simplify using k-map

Define software reliability. What is the difference between hardware & software reliability? Ans: Software reliability is the possibility that software will provide failure-f

What does it mean by business process engineering tools ?

as software project manager in company specialized on offshore oil industry have been tasked to discover factors affecting mantainability of the system developed by the company.wh

List the process maturity levels in SEIs CMM. Level 1: Initial - Few processes are explained and individual efforts are taken. Level 2: Repeatable - To track cost schedul

Q. Compare CMM with ISO 9001 ? 1: Management responsibility: ISO 9001 needs that the quality policy be defined and documented and understood as well implemented and maintaine