The iteration and increment terms are very confusing when reading the SDLC models based on Incremental or Iterative or incremental and iterative methodologies such as Incremental or evolutionary software development life cycle. In this article, I will try my best to clarify the main difference between these two terms. Iteration A iteration consists of all the phases, including …

SDLC – Iterative vs Incremental Read More »

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In the evolutionary model, after understanding the system, the development team does not really capture all the requirements. Still, it starts with some of the core or riskier modules. According to Tom Glib in Software Metrics A complex system will be most successful if implemented in small steps. Retreat to a previous successful step on …

SDLC – Evolutionary Model Read More »

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The requirements are collected upfront and split into small increments or slices. In the first increment, some of the core functionalities are implemented, and then these are given to the customer who gives feedback. And based on the feedback, the software is refined. This is called an iteration with fixed functionalities. Further, the same functionality …

SDLC – Incremental Model Read More »

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Before starting the actual development, a working prototype of the system was first built in the prototyping model. A prototype is a toy implementation of a system with limited functional capabilities, low reliability, and inefficient performance. Why does the prototyping SLDC model need to be constructed? Sometimes the customer does not know what exactly they …

SDLC – Prototyping Model Read More »

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It is a variant of the waterfall model. It mainly emphasizes verification and validation. The verification and validation activities are spread over the entire life cycle. In each phase, testing activities are planned in parallel with development. The diagrammatic representation of the V model looks like a V, and that is why it is called …

SDLC – V Model Read More »

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The classical waterfall model is idealistic and assumes that no defect is introduced during any development activity. However, in practice, defects are introduced in almost every phase of the life cycle, and defects usually get detected much later in the life cycle. For example, a design defect might go unnoticed till the coding or testing phase. …

SDLC – Iterative Waterfall Model Read More »

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SDLC – Classical Waterfall Model is the theoretical software development life cycle model, starts from feasibility study, and end to maintenance.

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