What is Waterfall Model?
The Waterfall model is a linear, sequential approach towards software development process. It includes phases like software requirements, system design and software design, code generation, testing, deployment and maintenance. It’s like a waterfall because you can only move to the next stage when the previous one is finished. Once a stage is done, making changes to it later in the project is hard.
Waterfall model
- Requirement Analysis: In this phase, requirements of the customer are gathered and requirement specification document is made.
- Software Design: In this phase, design of the desired software is made and visualize how the project will be.
- Implementation/Coding: In this phase, actual coding part is done and final product is ready.
- Testing: This phase includes testing the software product and checks if the product meets the software requirements or not.
- Deployment and Maintenance: In this phase, final product is deployed to the customer. While using this software product, if customer needs some changes or customer is facing some issue then this issues can be resolved and changes can be done in the maintenance phase.
Why Spiral Model is Better than Waterfall Model?
The spiral model is mainly used in the development processes of complex projects while the Waterfall model is used for simple projects. Both of these models are selected as per the characteristics of the project. The risks during the project are handled by using the Spiral model and it may be considered better than the waterfall model. Also, we will see some differences between the Spiral model and the waterfall model which suggests that the Spiral model is better than the waterfall model.