Incremental Model Definition In Software Engineering:
Incremental model in software engineering is a one of software development life cycle model. In this model, each module has to pass through the requirements, design, coding, and testing stages. So, there is a need for a subsequent release of each component to add features to the previous release. The main focus is continuous development until the complete system is achieved.
Incremental Model Phases In Software Engineering :
As per the below image, in this model, incrementally adding piece by piece expect that each piece is completed. So, Each iteration has requirements, design, coding, and testing phases.
- Requirements analysis
- Design
- Coding
- Testing
1.Requirements Analysis:
In this phase, the experts gather the requirements from the customers and analyze them. Requirements documents such as SRS (Software Requirement Specification), BRS(Business Requirements Specification), and CRS(Customer Requirement Specification).
2. Design:
In this phase, the main focus is on the design of the system functionality with high-level and low-level designs.
3.Coding:
In the coding phase of the model, the development team implements the functionality and passes it to the next phase.
4. Testing:
When testing team receives the builds from development team, software test engineers test each and every functionality of the system and verify it as per the requirements.
Diagram:
Incremental Model advantages and disadvantages :
Incremental Model Advantages :
- It is easy to recognized errors and defects
- More flexible compare to other models
- The customer received important features at an early stage
- It is easy to test and debugging
- Easier to manage risks
Incremental Model Disadvantages :
- The cost is too high
- Good planning is needed.
- Module interface need well define
Use:
- When requirements are clear.
- If client wants to release software product to the market early.
- When any new technology is used.
Conclusion:
So, in this way this model in software engineering will be helpful to develop a software product in a flexible way. If you want to explore more sdlc models then please visit below link.