SDLC FOR PROJECT

SDLC Overview

•  It is also called as Software development process.

• SDLC, is a process used by software industry to design, develop and test high quality software.

• the SDLC aims to produce a high quality software that meets customer expectations, reaches completion within time and cost estimates.

Definition

•  The software development life cycle (SDLC) is a framework defining tasks performed at each step in the software development process.

What is sdlc?

                          It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software. The life cycle defines a methodology for improving the quality of software and the overall development process.

 
Various stages in SDLC:- 

                 

  Planning and Requirement Analysis :

·   Requirement analysis is the most important and fundamental stage in SDLC.

·  This information is then used to plan the basic project approach and to conduct         product feasibility study in the economical, operational, and technical areas.

·  Planning for the quality assurance requirements and identification of the risks    associated with  the project is also done in the planning stage.

·  The outcome of the technical feasibility study is to define the various technical  approaches that can be followed to implement the project successfully with minimum risks.

  Defining Requirements :

                  Once the requirement analysis is done the next step is to clearly define and              document the product requirements and get them approved from the customer or             the market analysts.

·     This is done through‘SRS’– Software Requirement Specification document which consists of all the product requirements to be designed and developed during the project life cycle.

 Designing the product architecture :

·         SRS is the reference for product architects to come out with the best architecture for the product to be developed.

·          Based on the requirements specified in SRS, usually more than one design approach for the product architecture is proposed and documented in a DDS - Design Document Specification.

•    A design approach clearly defines all the architectural modules of the product along with its communication and data flow representation with the external and third party modules .

  Building or Developing the Product :

•    In this stage of SDLC the actual development starts and the product is built. The programming code is generated as per DDS during this stage
•  If the design is performed in a detailed and organized manner, code generation can be accomplished without much hassle.
•  Developers have to follow the coding guidelines defined by their organization and programming tools like compilers, interpreters, debuggers etc are used to generate the code.
•      Different high level programming languages such as C, C++, Pascal, Java, and PHP are used for coding. The programming language is chosen with respect to the type of software being developed

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 Testing the Product:

•      This stage is usually a subset of all the stages as in the modern SDLC models, the testing activities are mostly involved in all the stages of SDLC.
•          However this stage refers to the testing only stage of the product where products defects are reported, tracked, fixed and retested, until the product reaches the quality standards defined in the SRS

       Deployment in the Market and Maintenance :

·         Once the product is tested and ready to be deployed it is released formally in the appropriate market.

·         Sometime product deployment happens in stages as per the organizations business strategy. The product may first be released in a limited segment and tested in the real business environment .

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