The Waterfall model is a linear and sequential approach to the software development process. It is one of the earliest software development methodologies and is still used in many industries today. This guide will provide an overview of the Waterfall model, its key stages, and how it differs from other methodologies.
Key Stages of the Waterfall Model
The Waterfall model consists of several distinct phases, each with its own set of activities and deliverables. These phases include:
- Requirements Gathering: In this initial phase, the project team collects and documents all the requirements for the software.
- System Design: The system design phase involves creating a detailed design of the software based on the requirements gathered in the previous phase.
- Implementation: The implementation phase is where the actual coding of the software takes place.
- Testing: The testing phase involves verifying that the software meets the specified requirements and is free of defects.
- Deployment: The deployment phase is where the software is released to the end-users.
- Maintenance: The maintenance phase involves making changes and updates to the software to ensure it continues to meet the needs of the users.
Differences from Other Methodologies
The Waterfall model is different from other methodologies, such as Agile, in several ways:
- Sequential: The Waterfall model is a sequential process, meaning that each phase must be completed before the next one can begin.
- Documentation: The Waterfall model emphasizes extensive documentation, which can be a time-consuming process.
- Flexibility: The Waterfall model is not very flexible, making it difficult to accommodate changes to the requirements or scope of the project.
Learn More
For a more in-depth understanding of the Waterfall model and its application in software development, check out our comprehensive guide on Software Development Methodologies.
Waterfall Model Diagram