Скачать или смотреть 2.Difference between Waterfall & Agile Model with Example | Testing Methodology | LMTI M-2 |

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Notes:
Waterfall Model (Fixed Model)

When the software industry started the first model which was used is Waterfall Model, A very old model Traditional model also called as Linear Model

Note: Nowadays we are not using this model in any of software industry

The waterfall methodology is a linear project management approach, where stakeholder and customer requirements are gathered at the beginning of the project, and then a sequential project plan is created to accommodate those requirements. The waterfall model is so named because each phase of the project cascades into the next, following steadily down like a waterfall.

The Phases of the Waterfall Model

1.Requirement Analysis
2.Design
3.Implementation (Development Activity)
4.Testing
5. Maintenance
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​The businesspeople collect the information from the client and prepare a document called as SRS (Software Requirement specification).

In waterfall model one phase is going to provide input for the next phase.

It’s going to be step by step process; every phase depends on the previous phase. Only after completing one phase, we can move to another phase.

In waterfall model change in requirements is not possible

Waterfall model is preferred only for small project where the requirement can freeze.
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Agile methodology
Incremental testing is used in agile development methods and hence, every release of the project is tested thoroughly. This ensures that any bugs in the system are fixed before the next release.
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