Systems Development Life Cycle (SDLC)

Posted: December 4, 2012 in Testing Basics
Tags: , , , , ,

English: System Life Cycle as taught in the AQ...

Systems Development Life Cycle (SDLC):

The systems development life cycle (SDLC) is a conceptual model used in project management that describes the stages involved in an information system development project. o manage this, a number of system development life cycle (SDLC) models have been created: waterfall, fountain, spiral, build and fix, rapid prototyping, incremental etc.

Stages or different phases of SDLC are mentioned below:

  • Project planning, feasibility study
  • Systems analysis, requirements definition
  • Systems design
  • Implementation
  • Integration and testing
  • Acceptance, installation, deployment
  • Maintenance

Project planning, feasibility study: Establishes a high-level view of the intended project and determines its goals.

Systems analysis, requirements definition: Refines project goals into defined functions and operation of the intended application. Analyzes end-user information needs.

Systems design: Describes desired features and operations in detail, including screen layouts, business rules, process diagrams, pseudo code and other documentation.

Implementation: Coding is written by developers in this phase.

Integration and testing: Brings all the pieces together into a special testing environment, then checks for errors, bugs and interoperability.

Acceptance, installation, deployment: The final stage of initial development, where the software is put into production and runs actual business.

Maintenance: What happens during the rest of the software’s life: changes, correction, additions, and moves to a different computing platform and more? This, the least glamorous and perhaps most important step of all, goes on seemingly forever.


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