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A systems development life cycle is composed of distinct work phases that are used by systems engineers and systems developers to deliver information systems.Like anything that is manufactured on an assembly line, an SDLC aims to produce high-quality systems that meet or exceed expectations, based on requirements, by delivering systems within scheduled time frames and cost estimates. [3]
In software engineering, a software development process or software development life cycle (SDLC) is a process of planning and managing software development. It typically involves dividing software development work into smaller, parallel, or sequential steps or sub-processes to improve design and/or product management .
The V-model is a graphical representation of a systems development lifecycle.It is used to produce rigorous development lifecycle models and project management models. The V-model falls into three broad categories, the German V-Modell, a general testing model, and the US government standard.
In software development, the V-model [2] represents a development process that may be considered an extension of the waterfall model and is an example of the more general V-model. Instead of moving down linearly, the process steps are bent upwards after the coding phase, to form the typical V shape.
The waterfall model is the earliest Systems Development Life Cycle approach used in software development. [3] When it was first adopted, there were no recognized alternatives for knowledge-based creative work. [4]
V-Model – model, which defines the software development lifecycle and test process. ISO 9000 – family of standards is related to quality management systems and designed to help organizations ensure that they meet the needs of customers and other stakeholders[1] while meeting statutory and regulatory requirements related to the product.
Validation during the software development process can be seen as a form of User Requirements Specification validation; and, that at the end of the development process is equivalent to Internal and/or External Software validation. Verification, from CMMI's point of view, is evidently of the artifact kind.
Many software development processes can be run in a similar way to general project management processes. Examples are: Interpersonal communication and conflict management and resolution. Active, frequent and honest communication is the most important factor in increasing the likelihood of project success and mitigating problematic projects.