Waterfall model: Waterfall model is the first process model in which each phase is completed before starting the next phase. It is the first Software Development Life Cycle (SDLC) approach used for developing the software. It includes six different types of phases and they are as follows: Investigation The clear understanding of the problems in a system and solving them is performed in investigation phase. This helps in developing the project in less time. Analysis Gathering the data from the existing system and determining the requirements for new systems is done in analysis phase. It defines the user requirements and expectations. Design The existing program or code is executed according to the required design. It mainly depends on user requirements. Its aim is to convert the user requirements to a complete system. Construction Construction phase is used to execute the code according to design. It is managed by the group of programmers or developers called development team. Integration and Testing In integration and testing phase, the individual programs or codes are integrated together and tested as group. It is used for finding the errors and solving them. Implementation It is the last phase of the project development process in which development of the project is implemented and maintained. It includes user preparation, site preparation, installation and many such.

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Chapter 12, Problem 3DQ

Program Plan Intro

Waterfall model:

Waterfall model is the first process model in which each phase is completed before starting the next phase.

It is the first Software Development Life Cycle (SDLC) approach used for developing the software.

It includes six different types of phases and they are as follows:

Investigation

The clear understanding of the problems in a system and solving them is performed in investigation phase.

This helps in developing the project in less time.

Analysis

Gathering the data from the existing system and determining the requirements for new systems is done in analysis phase.

It defines the user requirements and expectations.

Design

The existing program or code is executed according to the required design.

It mainly depends on user requirements.

Its aim is to convert the user requirements to a complete system.

Construction

Construction phase is used to execute the code according to design.

It is managed by the group of programmers or developers called development team.

Integration and Testing

In integration and testing phase, the individual programs or codes are integrated together and tested as group.

It is used for finding the errors and solving them.

Implementation

It is the last phase of the project development process in which development of the project is implemented and maintained.

It includes user preparation, site preparation, installation and many such.

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