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Waterfall Model: A Better Way for Software Development

waterfall model

The secret to success is mastering a process. If your project or software development is in the right flow, you will be able to complete the project on time and successfully. Somehow, it is one of the challenging tasks for project management to choose the right software development process. If you are also facing the same problem, then you are in the right place. Today, we are going to discuss the software development model.

Generally, two types of software development lifecycle models are used by the project managers: Agile and Waterfall. Both are the best approaches. Here, we are discussing the Waterfall model.

“WATERFALL MODEL IS A PROCESS FOR SOFTWARE DEVELOPMENT OR LINEAR LIFE CYCLE MODEL WHICH FOLLOWS THE STRATEGY OF WATERFALLS; IT MEANS YOU NEED TO COMPLETE THE FIRST TASK FIRST BEFORE STARTING WITH THE NEXT ONE.”

What is the waterfall model?

The waterfall model is a software development procedure in which all the steps in a linear sequential way. The next step will be started after finishing the previous one.

Why waterfall model is best?

One of the best features of the waterfall model is that it allows software changes even during the development process. So, it is arranged linearly.

Is the waterfall a model or methodology?

In actual, the Waterfall model is a project management methodology that includes five to seven steps in a linear order, where a new phase will start only if the previous one finished. The waterfall model works on the mechanism of a waterfall.

Waterfall Model Success Rate:

According to the CHAOS report, the success rate of the waterfall is 26%

waterfall model

Waterfall Model Examples:

The waterfall model is mostly used to develop enterprise applications like Customer Relationship Management(CRM) Systems, Supply Chain Management Systems, Inventory Management Systems, etc.

Which Company uses Waterfall Model?

Well-known companies use the waterfall model in their software development process; one of these companies is Toyota.

History of Waterfall Model:

The waterfall model is one of the traditional software development models. Royce first documented the waterfall model in 1970. The waterfall methodology is a popular and flexible version of life cycle models for the software development process. Numerous industries quickly adopted the waterfall methodology for better project management.

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Phases of the Waterfall model:

Generally, the waterfall methodology includes five to seven steps in the software development process, from requirement analysis to deployment and maintenance. Have a look at these steps of the waterfall methodology:

  • Requirement Analysis
  • Design
  • Development
  • Testing
  • Maintenance

Requirement Analysis:

During the requirement stage, the developers analyze all the details and information about the software or project. It includes the gathering and documentation of the software requirements. This document defines what it should contain? How would it work? etc.

Design:

At the design stage, developers have categorized this into two types of design like logical or theoretical. The logical design includes the analysis and estimation of the design of the software, whereas the theoretical model means implementing the design.

Development:

In the waterfall methodology, after the designing phase, the project enters into the coding or development phase, where developers focus on the implementation and error handling. Developers can get references from the requirement and designing stages for better implementation.

Testing:

During the testing phase, all the individual units are integrated into the singular project to ensure the working and proper functionality. QA, beta testers, and all other testers report errors and other issues in the software that need to be resolved.

Maintenance:

After deployment, the software is analyzed to determine the errors in the releasing patches and updates. So, to ensure the proper working, the maintenance phase is introduced to handle the issues.

Advantages of the Waterfall Model:

Although the waterfall methodology is one of the traditional software development models, it still has numerous benefits to the software development process.

Clear structure:

Waterfall methodology uses a clear and straightforward structure sequentially, just like a waterfall in real life. It goes through several steps like requirement analysis, design, development, testing, deployment, etc. Unlike other software development models, waterfall methodology doesn’t require certified project managers.

Ease in management:

Waterfall methodology experienced as the simplest and easiest one for project management. The project managers’ waterfall flow can be easily managed, and it is very easy to shift from one phase to another phase.

Well documented:

The waterfall methodology inaugurated with the documentation, so it is known for its well-documentation feature, among other types of software development process models.

Transfer the information well:

The waterfall model works on a linear mechanism. Every stage relies on its previous stage for better functioning. Due to the well-documentation, the waterfall methodology conveys the information from one phase to another.

Speed up the project:

The waterfall methodology initializes with the documentation of the requirement analysis, which makes the development process smoother and quicker.

Clearly-defined milestone:

The requirement analysis and documentation before the design and development help the developers to focus on the goals of the project.

Disadvantages of the Waterfall Model:

1.) The waterfall methodology creates a problem for unexpected changes and revisions.

2.) The waterfall methodology excludes the client or end-users from the project.

3.) The waterfall methodology delays the testing until the previous steps are completed.

DevOps with Waterfall: Is it Useful?

Waterfall-style projects are not fast and responsive to change. Waterfall models have long cycle times, so DevOps can not coexist with the waterfall.

Waterfall Model vs Agile Model: Difference

Waterfall Model Agile Model
Incremental Approach Sequential Approach
Flexible Rigid
Collection of different projects Completed as single project
Allows changes during process No changes are allowed
Evolving Requirements Definite requirements
Testing is done concurrently Testing comes after development
No need of project managers Project manager is essential
Project details can altered anytime Fixed project details
High degree of coordination Limited team coordination

In Final Words:

After analyzing the benefits and drawbacks of the waterfall methodology, you will know that the waterfall methodology is the most suitable model for projects with well-defined requirements, and no changes are expected.

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