SDLC phases - SDLC

Discussion

• Prajakta Pandit   -Posted on 01 Nov 15
  
  - There are various phases of software development life cycle, which are used during development process of software.
  
  - These SDLC phases are also referred to as software development process models, such as waterfall model, incremental model, v-model etc.
  
  - Each process model follows a particular life cycle in order to ensure success in process of software development.
  
  - Following are the phases of SDLC :
  
    - 1. Requirement gathering and analysis
    - 2. Design
    - 3. Implementation or coding
    - 4. Testing
    - 5. Deployment
   - 6. Maintenance
  
  1. Requirement gathering and analysis : This phase is the main focus of the project managers, stake holders and users etc. Business requirements are gathered in this phase. The following questions get answered during this phase :
  
    - Who is going to use the system?
    - How will they use the system?
    - What data should be input into the system?
    - What data should be output by the system?
  
  After requirement gathering these requirements are analyzed for their validity.
  
  2. Design : Requirements are translated into design. In this phase the system and software design is prepared from the requirement specifications. The system design specifications serve as input for the next phase of the model.
  
  3. Implementation or Coding : In this phase coding is started, the code is produced by the developer and is the main focus for him. This is the longest phase of the SDLC.
  
  4. Testing : The testing verifies the deliverable of the implementation phase against requirements. During this phase unit testing, integration testing, system testing, acceptance testing are done.
  
  5. Deployment : After successful testing the product is delivered or deployed to the user for their use.
  
  6. Maintenance : When the customer starts using the developed system then the actual problems comes up and needs to be solved from time to time. This process where care is taken for the developed product is known as maintenance.
  
  

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