Iterative and incremental model
iterative and incremental model is sometimes referred to as a. However, in this article, one can distinguish more or less difference.
First, these two models are the same points that are based on the spirit of the evolutionary model, and adds features targeted the supply part to the customer system can be put into use in the production environment without actually wait until the entire system is completed (in the form or evolutionary model, the session template or intermediaries are not targeting real commissioning to customers, except the final version). So customers can use, each version must be implemented as a full process from the analysis of the work required with the ability to add or change, design, realization and testing until be seen as a process (cycle) children. The cycle you can use different models (usually waterfall). Figure 5 illustrates these two models, in which each cycle is a waterfall small children.
The goal of the first version was developed and the core group of important functions. After each version being put into use, the results of the evaluation will be feedback and planning cycle of the next version to implement:
• Changes to the previous version in order to meet demand better customer
• can add features or characteristics complement
• the difference between the two models ascending and repeaters can be understood simply as follows (compared with the product was completed in the previous cycle) :
• model ascending (incremental): add functionality to the product (see illustration Figure 6).
• the model iteration (iterative): change the product (see illustration Figure 6)
• One SEP can combine both repeat and ascending pattern, such RUP (Rational Unified Process).
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