evolutionary model in software engineering
Introduction evolutionary model:
Linear process flow executes each of the five activities in sequence. An iterative process flow repeats one or more of the activities before proceeding to the next. An evolutionary process flow executes the activities in a circular manner. Each circuit leads to a more complete version of the software.
What is evolutionary model in software engineering?
Evolutionary model is a combination of Iterative and Incremental model of software development life cycle. Delivering your system in a big bang release, delivering it in incremental process over time is the action done in this model. ... Therefore, the software product evolves with time.
What is evolutionary process flow?
Linear process flow executes each of the five activities in sequence. An iterative process flow repeats one or more of the activities before proceeding to the next. An evolutionary process flow executes the activities in a circular manner. Each circuit leads to a more complete version of the software.
It is also called successive versions model or incremental model. At first, a simple working
model is built. Subsequently it undergoes functional improvements & we keep on adding new
functions till the desired system is built.
Applications:
1. Large projects where you can easily find modules for incremental implementation. Often
used when the customer wants to start using the core features rather than waiting for the
full software
2.Also used in object oriented software development because the system can be easily
portioned into units in terms of objects.
Advantages:
1.User gets a chance to experiment partially developed system
2.Reduce the error because the core modules get tested thoroughly.
Disadvantages:
1.It is difficult to divide the problem into several versions that would be acceptable to the
customer which can be incrementally implemented & delivered.
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