Explain the Iterative Model - Testing

Explain the Iterative Model

Each release of Iterative Model is developed in a specific, fixed time period called iteration. Each iteration focuses on a certain set of requirements. Each cycle ends with a usable system i.e. each iteration results in an executable release. Mini waterfall model is followed in each iteration. All high priority risks are taken in the first iteration so that risk at the end of the project is minimal. Since every iteration results in executable release, it enables early user feedback. Another advantage is that major risks are resolved at initial iterations.

Iterative Model enables the accessing to previous phases and the changes are made accordingly. The final output of the product is revived at the end of the SDLC.

The iterative model approach is to iterate on steps as the project progresses with requirements. Iterative model iterates Requirements, Design, Build and test phases again and again for each requirement and builds up a system iteratively till the complete system is built. The advantage is that iterative model can accommodate changes in requirements which are very common in most of the projects. It also provides an opportunity to identify and build upon any major requirement or design flaws throughout the process because of its iterative nature.
Explain the Incremental Model - Testing
Testing - The incremental model integrates the elements of the water fall model that is applied in an iterative fashion. The sequence produces the deliverable increments of the software........
Explain the Spiral Model - Testing
Testing - The spiral model follows creation of a series of prototypes for refining the understanding of the requirements. The kind of approach is best suited to projects that are not at all clearly defined and........
Explain the Evolutionary Model - Testing
Testing - All the models suffer from the disadvantage that the duration of time from start of the project to the delivery time of a solution is very high. Evolutionary model attacks this problem in a slightly different approach........
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