Waterfall Model.pdf - PROCESS MODELS THE WATERFALL MODEL...

PROCESS MODELS
THE WATERFALL MODEL
GROUP ONE
MEMBERS ADMISSION NUMBER
1. DERICK DOUGLAS PAMBAH J17-3042-2019
2. ELIZABETH WANGUI J17-3006-2019
3. JOSEPH KING`ARA J17-3022-2019
4. FELISHNA WAIRIMU J17-3037-2019
5. GABRIEL NGETI J17-3028-2019
6. EMMANUEL WANGILA J17-3045-2019
7. EDWARD NGUGI J17-3004-2019
8. JAMES NJENGA KARANJA J17-5550-2019
1
1 WATERFALL MODEL

THE WATERFALL MODEL
DEFINITION
The waterfall model is a classical model used in system development life
cycle to create a system with a linear and sequential approach. It is termed
as waterfall because the model develops systematically from one phase to
another in a downward fashion. This model is divided in various phases and
the output of one phase is used as the input of the next phase. Every phase
has to be completed before the next phase starts and there is no
overlapping of phases. Also referred to as Linear-Sequential Life Cycle
Model due to its sequential flow.
SEQUENTIAL PHASES OF WATERFALL MODEL
1. Requirements
2. System Design
3. Implementation
4. Integration and Testing
5. Deployment of the system
6. Maintenance

PHASE 1: REQUIREMENTS
In this case the requirements are gathered by the business analyst
and they are analysed by the team. Requirements are documented
during this phase and clarifications can be sought. Business analysts
document the requirements based on their discussion with the
customer. For example, after going through the requirements and
analysing them, the following sample questions can be established

Will the new banking application be used in more than one
country?