Q. Describe incremental model? Define core product and detailed plan.

Ans. The incremental model is proposed by D.L PARNAS. It is basically implemented by combining elements of linear sequential model and iterative prototyping model. Incremental development refer to the process of developing to completion only a part of the requirement at a time by selectively developing parts of the requirements, designing, coding and testing software that means these require functions, the software product may be built up incrementally to its final configuration. This approach model releases the product partially to the customer in the beginning and slowly at increased functionality to the system. That is why it is called incremental model.