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Sdlc Stages

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Submitted By praanthavvaru
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Software Development Life Cycle :
Software Development life cycle is a process for the software project that describes the phases involved in project. It tells the detailed plan how to develop,maintain,replace and enhance specific software .The life cycle defines a methodology for improving quality of software and overall development process
The different phases in software development life cycle are * Planning and requirement analysis * Defining requirements * Design * Building or Developing the product * Testing * Deployment
Design :
Once the requirements analysis and defining requirements is done next process is Designing the product architecture . Software Requirement specification (SRS) is the reference for the developers to come out with best design to be developed .the product design is proposed and documented on Design document specification(DDS). The design approach defines the architectural modules of product with its communication and data flow representation. All modules in the design must be defined clearly with details in DDS  

Waterfall Model: waterfall model is used to approach for system analysis and design .waterfall model is the first modern approach model and it is also referred as linear-sequential life cycle model. in waterfall model the process is divided into separate phases .its very simple to use and understand . In this model each phase is completed before the next phase and no overlapping in phases.

The design phase is the described into logical and physical design sub-phases.In the logical design phase the systems analysts will use the information collected in requirements phase to design the system of any hardware or software system. when the higher level logic is completed then the systems analyst begins transforming into physical design

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