What is the disadvantage of iterative waterfall model?

Answer 1

Major difference between waterfall and iterative model is that waterfall model has a linear process in which full product is available after the last phase, while incremental model full product is available after several such phases.

waterfall model is good when we have a clear understanding of requirements.

Incremental model is good when we have to deliever the final product wihin certain timeline and we have very less number of programmers available to complete the product in time, so basic idea is to deliever a working partial product within time and provide it's additional functionalities later.

Answer 2

The waterfall model is also known as the linear sequential model. This model is very easy to implement, and output is generated after every stage. However, real projects usually don't follow the flow in the model.

Answer 3

Advantages of iterative development

1. You always have a running version of the program, eg, if you run out of time, you can deliver the last iteration, which may not have all functionality, but it does something. This is usually worth more to your instructor than a program which doesn't compile or run.
2. Errors are easier to findbecause they are most likely in that last little bit of code that you added.
3. It's psychologically more satisfying to get positive feedback on your work, ie, a running program.
4. Corrections early in development generally take less time than later in the development process.

Disadvantages of iterative development

1. A disadvantage of iterative programming is that it tempts you to start coding before you have a clear idea of what you want to do. Think about the problem a little bit before you start. This design process becomes more important as programs become larger.

Answer 4

In the case where it is a simple project with well defined requirements and with very little likelihood of them changing during the development, then the Waterfall model is good. Each step can be completed before moving on to the next with a very small chance that any stage would have to be gone back to. An iterative model is more likely to be used in more complex systems where there is a greater likelihood for the requirements to change.

Answer 5

No iterations no steps and no fall from the steps. So, water without fall is only water which is 3D object not a waterfall.