Final answer:
The waterfall model is a linear sequential approach to software development, while the waterfall-v model adds testing stages throughout the process.
Step-by-step explanation:
The Waterfall Model
The waterfall model is a linear sequential approach to software development, where each phase must be completed before moving on to the next. It consists of the following phases:
- Requirements gathering and analysis
- System design
- Coding
- Testing
- Deployment
- Maintenance
The waterfall model is typically used in situations where the requirements are well-defined and fixed, and the technology being used is proven and stable.
The Waterfall-V Model
The waterfall-v model is an extension of the waterfall model that emphasizes the importance of testing throughout the development process. It adds verification and validation stages for each phase of the waterfall model. The V-shaped model helps to ensure that the software is thoroughly tested before it is deployed.