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Incremental build model

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John Brock

on 30 January 2014

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Transcript of Incremental build model

Incremental build model
What is it?
The incremental build model is a method of software development where the model is designed, implemented and tested incrementally (a little more is added each time) until the product is finished. It is an evolution of the waterfall model, by using that model, while being incrementally applied.
What are you doing?
The steps involved in the Incremental build model are:

Communication: helps to understand the objective.

Planning: required as many people (software teams) work on the same project but different function at same time.

Modeling: involves business modeling, data modeling, and process modeling.

Construction: this involves the reuse software components and automatic code.

Deployment: integration of all the increments.
What is the waterfall method?
The waterfall model is a sequential design process, often used in software development processes, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of Conception, Initiation, Analysis, Design, Construction, Testing, Production/Implementation, and Maintenance.
How is that applied?
The series of releases is referred to as “increments”, with each increment providing more functionality to the customers. After the first increment, a core product is delivered, which can already be used by the customer. Based on customer feedback, a plan is developed for the next increments, and modifications are made accordingly. This process continues, with increments being delivered until the complete product is delivered. Which is similar to the waterfall method, just refined a little.
Similarities?
The Iterative and Incremental development is similar to the incremental build model, because it encompasses this model in itself, it is any combination of both iterative design or iterative method and incremental build model for development.
Advantages
Generates working software quickly and early during the software life cycle.
More flexible – less costly to change scope and requirements.
Easier to test and debug during a smaller iteration.
Customer can respond to each built.
Lowers initial delivery cost.
Easier to manage risk because risky pieces are identified and handled during it’d iteration.
Disagvantages
Needs good planning and design.
Needs a clear and complete definition of the whole system before it can be broken down and built incrementally.
Total cost is higher than waterfall.
Sources
http://istqbexamcertification.com/what-is-incremental-model-advantages-disadvantages-and-when-to-use-it/
Full transcript