What is Software Development Life Cycle?
- Software Development Life Cycle (SDLC) is a pictorial and diagrammatic representation of the software life cycle.
- Software industries use SDLC to design, develop and test high-quality software.
- SDLC represents all the methods required to make a software product transit through its life cycle stages.
- It also defines the structure in which these methods are to be undertaken.
Software Development Life Cycle (SDLC) comprises of seven distinct phases:
Phase 1: Planning
- In the planning phase, project goals are determined and a high-level plan for the intended project is established.
- Planning is the most fundamental and critical organizational phase.
- The three primary activities involved in the planning phase are i. Identification of the system for development ii. Feasibility assessment iii. Creation of project plan
Phase 2: Analysis
- In the analysis phase, end-user business requirements are analyzed and project goals converted into the defined system functions that the organization intends to develop.
- The three primary activities involved in the analysis phase are i. Gathering business requirements ii. Creating process diagrams iii. Performing a detailed analysis
Phase 3 : Design
- In the design phase, we describe the desired features and operations of the system.
- This phase includes business rules, pseudo-code, screen layouts, and other necessary documentation.
- The two primary activities involved in the design phase are i. Designing of IT infrastructure ii. Designing of system model
Phase 4: Development
- In the development phase, the transformation of all the documents from the previous phase into the actual system.
- The two primary activities involved in the development phase are i. Development of IT infrastructure ii. Development of database and code
Phase 5: Testing
- In the testing phase, all the pieces of code are integrated and deployed in the testing environment.
- To check the errors, bugs, and defects testers follow software testing life cycle activities.
- The two primary activities involved in the testing phase are i. Writing test cases ii. Execution of test cases
Phase 6: Deployment
- During this next phase, the system is deployed to a real-life environment where the actual user begins to operate the system.
- All data and components are then placed in the production environment. This phase is also called referred to as ‘delivery.’
Phase 7: Maintenance
- To make sure the system continues to work and stay updated to meet the business goals any necessary enhancements, corrections, and changes will be made in the maintenance phase.
- The three primary activities involved in the maintenance phase are i. Support the system users ii System maintenance iii. System changes and adjustment
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