Rapid Application Development (RAD) model is also sometimes referred to as the Rapid Prototyping Model.
The major aims of the RAD model are as follows:
The major aims of the RAD model are as follows:
- to decrease the time taken and the cost incurred to develop software systems
- to limit the costs of accomodating change requests by incorporating them as early as possible before large investments have been made on development and testing.
There are four phases in this model:
- Requirement planning phase:- requirement are captured using any group elicitation technique. only issue is the active involvement of users for understanding the project.
- User description:- joint teams of developers and users are contituted to prepare, understand and review the requirements. the team may use automated tools to capture information from the other users
- Construction phase:- this phase combines the detailed design, coding and testing phase of waterfall model. here, we release the product to customer. it is expected to use code generators, screen generators and other type of productivity tools.
- Cut over phase:- this phase incorporate acceptance testing by the users, installation of the system, and user training