The Global Database of Data Center Industry Expertise
SDLC stands for Software Development Life Cycle. It is a process that gives a complete idea about developing, designing, and maintaining a software project by ensuring that all the functionalities along with user requirements, objectives, and end goals are addressed. With SDLC, the software project’s quality and the overall software development process get enhanced.
For any software project, SDLC offers the following benefits
Stage 1: Requirement Gathering & Analysis Phase
In an SDLC, this is the first and most crucial phase for a software project’s success. In this phase, communication takes place between stakeholders, end-users, and project teams, as both functional and non-functional requirements are gathered from customers.
The Requirement Gathering & Analysis Phase of SDLC involves the following
Stage 2: Design Phase
In the design phase of an SDLC, the architectural design is proposed for the project based on the SRS Document requirements.
The Designing Phase of SDLC involves the following
Stage 3: Development Phase
In the entire SDLC, the development phase is considered to be the longest one. In this phase, the actual project is developed and built.
The Development Phase of SDLC involves the following
Stage 4: Testing Phase
Almost all stages of SDLC involves the testing strategy. However, SDLC’s testing phase refers to checking, reporting, and fixing the system for any bug/defect. In this phase, the on-going system or project is migrated to a test environment where different testing forms are performed. This testing continues until the project has achieved the quality standards, as mentioned in the SRS document during the requirement gathering phase.
The Testing Phase involves the following-
Stage 5: Deployment & Maintenance Phase
In this SDLC phase, once the system testing has been done, it is ready to be launched. The system may be initially released for limited users by testing it in a real business environment for UAT or User Acceptance Testing.
The Deployment & Maintenance Phase involves the following-
Various SDLC models are defined and designed to follow the software development process. These models are also known as Software Development Process Models. Each of these models follows a series of steps for ensuring the complete success of a project.
Some of the most popular SDLC models used for software development include-
This model is the most commonly used SDLC model. In this model, each phase starts only after the previous step has been completed. This is a linear model having no feedback loops.
Strengths of the Waterfall Model
Weaknesses of the Waterfall Model
In this model, in the initial stages, a partial implementation of the complete system is constructed such that it will be present in a deliverable form. Increased functionalities are added and for any defects, they are fixed with the working product delivered at the end. This process is repeated until the product development cycle gets completed. These repetitions of processes are known as iterations. With each iteration, a product increment gets delivered.
Strengths of Iterative-Incremental Model
Weaknesses of Iterative-Incremental Model
The spiral model combines risk analysis along with RAD prototyping to the Waterfall model. Each of the cycles has the same steps as in the case of the Waterfall model.
The spiral model has 4 quadrants, namely- Determine Objectives, Alternatives and Constraints (Quadrant 1), Evaluate Alternatives, Identify and Resolve Risks (Quadrant 2), Develop Next-Level Product (Quadrant 3) and Planning the Next Phase (Quadrant 4).
Strengths of the Spiral Model
Weaknesses of the Spiral Model
The agile model is the combination of the iterative-incremental model that depends on process adaptability along with customer satisfaction through the delivery of software products. In this model, the project is broken down into smaller time frames for delivering certain features during a release.
Strengths of the Agile Model
Weaknesses of the Agile Model
Rapid Application Development (RAD) Model
The RAD SDLC model is based on prototyping and iterative development, with no involvement of a defined planning structure. In this model, different function modules are parallelly developed as prototypes and then integrated to speed up product delivery.
Strengths of RAD Model
Weaknesses of RAD Model
Add a Comment