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In last article we have understood about the iterative model and in this article we will get details about the spiral model. This model is one kind of software development life cycle model. 

ISTQB - Spiral Model

In last article we have understood about the spiral model, Now we will about to understand for Prototype model which is widely used for software development. This would be the last model of software development. In prototype model, we are creating the replica of the original product or application first which will be observed and identified deeply. After the engineering phase will be done for product or application, we are including clients here for their feedback on product replica. Here Design and coding is not directly applied but before that one prototype have been created which will give us the actual feel or the product or application and client will understood that properly and list down more requirements, updates and changes which needs to be note before the actual development.

ISTQB - Prototype Model

Iterative model is one part of the software development life cycle. There are so many models available for software development life cycle as we have seen all in last article. In Iteration model, initially implementation will be done as simple as possible and afterwards complexity of the product will be increased. Further features of the product will be introduced until the final deployment procedure will be taken place. We must say that iteration model itself describes that it will break the large product in very small iteration and each iteration will be developed perfectly.

In the initial level of iterative model, all requirement will not be specified. Here first of all specified requirements will be developed and it will be reviewed to identify further requirements and it will be discussed and implemented in next iteration. Iteration procedure will be started with the simple implementation and small set of requirement will be developed first and each iteration will be contain versions till whole product will be developed. Each iteration have well define time period for development, testing and deployment.