this ppt has explaination on waterfall model

1. The waterfall model is a software development methodology that follows a
linear sequential approach. It consists of several stages that must be
completed in a sequential manner before moving on to the next stage.
WATERFALL MODEL

2. Requirements gathering: In this stage, the requirements of the software are gathered
from the client or end-user.
Analysis: In this stage, the gathered requirements are analyzed to determine the
feasibility of the project.
Design: In this stage, the software is designed based on the gathered requirements
and the analysis done in the previous stage.
Implementation: In this stage, the actual coding of the software takes place.
Testing: In this stage, the software is tested to ensure that it meets the requirements
and works as expected.
Deployment: In this stage, the software is deployed to the production environment.
Maintenance: In this stage, the software is maintained and updated as needed.
The stages in the waterfall model are as follows:
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2.
3.
4.
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7.

3. Easy to plan: The sequential nature of the waterfall model makes it easy to plan and
estimate the project schedule and budget
Clear documentation: The waterfall model emphasizes the importance of
documentation at each stage of the project.
Minimal customer involvement: While some may consider this a disadvantage, the
minimal involvement of the customer or end-user in the development process can
actually be an advantage in some cases.
Better control over the project: Each stage is completed before moving on to the
next, which helps to ensure that the project stays on track and that issues are identified
and addressed early in the development process.
Lower risk: The waterfall model is a well-established and widely used methodology,
which means that the risks associated with using an untested or experimental
development approach are reduced.
The advantages of the waterfall model include:
1.
2.
3.
4.
5.

4. Rigidity: The sequential nature of the waterfall model makes it rigid and inflexible. Once
a stage is completed, it is difficult to go back and make changes without impacting
subsequent stages.
Limited customer involvement: While some may consider this an advantage, the
minimal involvement of the customer or end-user in the development process can also
be a disadvantage.
Testing is done at the end: In the waterfall model, testing is typically done at the end
of the development process.
Limited scope for changes: Because the requirements are defined at the beginning of
the project and changes are difficult to make later on, the waterfall model is not well-
suited for projects where the requirements are likely to change.
The disadvantages of the waterfall model include:
1.
2.
3.
4.

5. Overall, the waterfall model is best suited for projects with well-defined
requirements and a clear understanding of the project scope. It is not recommended
for complex projects or projects where requirements are likely to change.
CONCLUSION...