What are the major phases of the software lifecycle? Give a short description of each.

Expert Solution

ANSWER -

PHASES OF SOFTWARE DEVELOPMENT LIFECYCLE (SDLC)

Software development lifecycle describes the software cycle lifecycle and the order which it needs to be executed. It is well defined structured sequences of stages where each phase produces some outputs which is required by the next phase, so all the phases are interdependent.

SDLC mainly includes includes the following 6 phases -

Requirement gathering and analysis phase
Software Design phase
Implementation or programming (coding) phase
Testing phase
Deployment phase
Operation and maintainance phase

These all are the main phase of SDLC, now we look into them one by one -

Requirement gathering and analysis phase - In this phase , the requirements are gathered where the software development team holds discussion with project managers and stakeholders to get information on their requirements. After the requirements are gathered an requirement specification document is prepared, this makes the input for the next phase.
Software Design phase -In this phase, the requirements that are gathered from the first phase is used to prepare a software design which helps to specify the hardware and overall system architecture.
Implementation or programming (coding) phase - In this phase, a working programming code in a suitable programming language is started to be made from the requirements of software design phase. This phase is the longest phase in SDLC.
Testing phase - Once the coding phase is finished, the testing experts conducts testing of the code so that the code meets all the specified requirements. The testing phase include module testing, program testing and product testing.
Deployment phase - In this phase, the customer are given a prototype to use so that if there is any additional requirement or changes to be made or to find any bugs the customer can report it to the software development team. After making the required changes final deployment is made.
Operation and maintainance phase - After the final deployment is made the end users are given to use the final product. This phase the developer keeps the software operational and is maintained and updated time to time according to the changes in technology and environment.

These all constitutes the phases of the software lifecycle.

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venereology answered 2 months ago

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