Notes

Component Based Development: The component-based development (CBD) model incorporates many of the characteristics of the spiral model. It is evolutionary in nature, demanding an iterative approach to the creation of software. However, the component-based development model composes applications from prepackaged software components, called classes. Modeling and construction activities begin with the identification of candidate components. … Read more

Formal Methods Model :  The formal methods model encompasses a set of activities that leads to formal mathematical specification of computer software. Formal methods enable a software engineer to specify, develop, and verify a computer-based system by applying a rigorous, mathematical notation.   When formal methods are used during development, they provide a mechanism for … Read more

Spiral Model: The spiral model is an evolutionary software process model that combines the iterative nature of prototyping with the controlled and systematic aspects of the linear sequential model. Using the spiral model, software is developed in a series of incremental releases. During early iterations, the incremental release might be a paper model or prototype. … Read more

Incremental Model: The incremental model combines elements of the linear sequential model with the iterative philosophy of prototyping. The incremental model applies linear sequences in a staggered fashion as calendar time progresses. Each linear sequence produces a deliverable “increment” of the software. In incremental model, the first increment is often a core product. Here the … Read more

RAD Model Rapid Application Development (RAD) is an incremental software development process model which is a “high-speed” adaptation of the linear sequential model in which rapid development is achieved by using component-based construction. If requirements are well understood and project scope is constrained, the RAD process enables a development team to create a “fully functional … Read more

Evolutionary Software Process Mode: Evolutionary software models are iterative. They are characterized in manner that enables the software engineers to develop increasingly more complete version of a software. That is, initially a rapid version of the product is being developed and then the product is developed to more accurate version with the help of the … Read more

Prototyping Model Often, a customer defines a set of general objectives for software but does not identify detailed input, processing, or output requirements. In other cases, the developer may be unsure of the efficiency of an algorithm, the adaptability of an operating system, or the form that human/machine interaction should take. In these, and many … Read more

Linear Sequential Model/Waterfall Model/Classic Life Cycle The linear sequential model, sometimes called the classic life cycle or the waterfall model, suggests a systematic, sequential approach to software development that begins at the system level and progresses through communication, planning, modeling, construction and deployment. The following given figure illustrates the linear sequential model for software engineering. … Read more

Problem Solving Loop : All software development can be characterized as a problem solving loop in which four distinct stages are encountered: status quo, problem definition, technical development, and solution integration.             Status quo represents the current state of affairs, problem definition identifies the specific problem to be solved, technical development … Read more

Software Process Model :  To solve actual problems in an industry setting, a software engineer or a team of engineers must incorporate a development strategy that encompasses the process, methods, and tools layers and the generic phases.  This strategy is often referred to as a process model. A process model for software engineering is chosen … Read more