Describe advantages and disadvantages of waterfall methodology for software development?

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Advantages of Waterfall model
Simple and easy to understand and use
Easy to manage due to the rigidity of the model . each phase has specific deliverables and a review process.
Phases are processed and completed one at a time.
Works well for smaller projects where requirements are very well understood.
Clearly defined stages.
Well understood milestones.
Easy to arrange tasks.
Process and results are well documented.

Disadvantages of waterfall model
No working software is produced until late during the life cycle.
High amounts of risk and uncertainty.
Not a good model for complex and object-oriented projects.
Poor model for long and ongoing projects.
Not suitable for the projects where requirements are at a moderate to high risk of changing. So risk and uncertainty is high with this process model.
It is difficult to measure progress within stages.
Cannot accommodate changing requirements.
No working software is produced until late in the life cycle.
Adjusting scope during the life cycle can end a project.
Integration is done as a "big-bang. at the very end, which doesn't allow identifying any technological or business bottleneck or challenges early.

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shinde malhari baban

  • May 9th, 2016
 

The following step are included in waterfall model
1) Communication
2) Modeling
3) Deployment

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