Validation and Verification in SDLC

In Software Engineering, we chant the term of validation and verification a lot between the software team members. Actually, it is used across the software project phases and I think there is a misconception in understanding the two terminologies and when to use them.

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The Waterfall Model, a different perspective

What is the Waterfall Model (Waterfall Methodology)?

It is mostly known as the traditional software development process model, widely used until now, and the most popular SDLC model and the one you should avoid to use. Moreover, it was the first introduced presentation of the software lifecycle.

You can read this Wikipedia page to know the waterfall model history.

The Waterfall Model is a linear sequential flow. In which progress is seen as flowing steadily downwards (like a waterfall) through the phases of software implementation. This means that any phase in the development process begins only if the previous phase is complete. The waterfall approach does not define the process to go back to the previous phase to handle changes in requirement.

In this article, we will discuss the advantages and disadvantages of the waterfall, should we avoid it? when to use it? and the waterfall model pitfall, and why I see it as the father of the SDLC models.

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What do you need to know about the Software Development phases

Software development lifecycle models have different strategies and methodologies for the software development process and I wrote about the different types of development models, please review this article for more information, we also discussed how to select the most suitable model based on your project context.

Regardless, what model you have selected, these models are sharing mostly the same development phases with different arrangements, a more or a less phase. Furthermore, they can be implemented in an iterative and incremental model.

In this article, we will discuss the most common phases across all SDLC models. I will add other articles to discuss each phase in details 🙂 Read more

Software Development Life Cycle Models and Methodologies

Introduction

Software development life cycle (SDLC) is a series of phases that provide a common understanding of the software building process. How the software will be realized and developed from the business understanding and requirements elicitation phase to convert these business ideas and requirements into functions and features until its usage and operation to achieve the business needs. The good software engineer should have enough knowledge on how to choose the SDLC model based on the project context and the business requirements.

Therefore, it may be required to choose the right SDLC model according to the specific concerns and requirements of the project to ensure its success. I wrote another article on how to choose the right SDLC, you can follow this link for more information. Moreover, to learn more about Software Testing life cycles and SDLC phases you follow the links highlighted here.

In this article, we will explore the different types of SDLC models and the advantages and disadvantages of each one and when to use them.

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