Phases involved in the waterfall life cycle

Question

Describe the several phases which are involved within waterfall life cycle.

Answer 1

Phase I – Modelling Phase

Within this phase, we see software product as a part of the larger system or the organization in which the product is needed. This is mainly a system view in which all the system elements are produced.

Phase II – Software Requirements Analysis

In this phase all the requirements are collected. The domain of information for the software is understood. The behaviour, function, performance and interfacing of the software are calculated.

Phase III – Design

In this phase, we estimate the data structures, software architecture, interface representations and procedural (algorithmic) detail which goes into the software.

Phase IV – Code Generation

Within this phase, the actual programming is carried out in order to attain the machine code; it refers to an implementation of design.

Phase V – Testing

The testing is defined as the process which goes hand in hand along with the production of machine code. There is number of the testing strategies. First unit testing and then the integration testing are carried out. Alpha testing is done in order to see in case the software is according to the analysis model otherwise beta testing is to see if the software is what the customer required.

Phase VI – Installation

In this phase, the software is handed over to the customer.

Phase VII - Maintenance

In software life cycle, this is largest phase. Maintenance can be classified into several types: in order to modify software as the per the requirements of customer evolved, to eliminate the residual bugs within the software and so on.