Software Development Life Cycle (SDLC) is a methodology that includes necessary actions for running software development process. It consists of software development specification, maintenance, improvement and modification of specific details related to software. There are different methods that manage and support SDLC during software development process, so called Software Development Models. Good and proven examples are Waterfall model, Incremental build model, V-model, Iteration model, Prototyping model, Spiral Enhancement model, Rapid Application Development(RAD) concept and Agile modeling.
Steps of SDLC:
SDLC consists of four different stages. These stages are the following:
Planning is the most essential and valuable stage of SDLC. It's a set of actions, comprising gathering requirements and project analysis. A result of the first stage is the creation of Requirements Specification Document.
Requirements Specification gives full information for a designer for creating mockups and wireframes for desired software. This stage transfers requirements into logical actions. Designer prepares Functional Specification for future development.
Development stage is a move from design into programming code. Project manager or Team lead, following Functional Specification Document, divides project into separated tasks and gives them to developers, so they will deliver source code of the product to the testing stage.
Testers provide a Test Plan Document, with the list of actions that would be performed on software. Based on this document, they create Test Case and Test Scenario Document, as a guide for software testing. The main aim is to define possible errors and bugs, and, therefore, improve the quality of the created software.
5.Deployment & further maintenance
As we have pushed the software through all the stages above, it is ready for target market. Delivered software should be periodically maintained for eliminating issues that customers are experiencing.
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