VISUAL BASIC

Detailed explanation-1: -The spiral model combines the idea of iterative development with the systematic, controlled aspects of the waterfall model. This Spiral model is a combination of iterative development process model and sequential linear development model i.e. the waterfall model with a very high emphasis on risk analysis.

Detailed explanation-2: -The spiral model is a systems development lifecycle (SDLC) method used for risk management that combines the iterative development process model with elements of the Waterfall model.

Detailed explanation-3: -Spiral model is a combination of the Iterative and Waterfall SDLC models with a significant accent on the risk analysis.

Detailed explanation-4: -The spiral model is a combination of sequential and prototype models. This model is best used for large projects which involve continuous enhancements. There are specific activities that are done in one iteration (spiral) where the output is a small prototype of the large software.

Detailed explanation-5: -Agile Model It combines the iterative and incremental process and focuses on rapid delivery along with customer satisfaction.

Detailed explanation-6: -Agile method combines both incremental and iterative methodology.

Detailed explanation-7: -The RAD (Rapid Application Development) model is based on prototyping and iterative development with no specific planning involved.