The Incremental Build Model is a method used in software development where the product is designed, implemented, and tested incrementally (in small parts) until the product is finished. It involves both construction and delivery stages, allowing the developer to make alterations as the project progresses and technology evolves.
The Genesis of the Incremental Build Model
The Incremental Build Model, like many other software development models, evolved out of the need for more flexible and adaptable approaches than the traditional Waterfall model, which emphasizes a strict linear approach to development.
The origin of the Incremental Build Model can be traced back to the 1970s, with early references in literature such as “Managing the Development of Large Software Systems” by W. Royce. The Incremental Build Model gained significant traction in the 1990s and early 2000s, as the rapid evolution of software technology demanded more flexible development methods.
Detailed Overview of the Incremental Build Model
The Incremental Build Model splits the product into various builds, where sections of the project are created and tested separately. This model emphasizes developing a software product in increments and incorporating feedback between each increment.
Each increment adds new functionality to the previous build, enhancing the product progressively. This approach allows for the early delivery and improvement of parts of the software, which can be tested and validated before the final build, minimizing the risk and making it easier to respond to changes.
The Internal Structure of the Incremental Build Model
The Incremental Build Model comprises multiple phases, including requirements gathering, system design, implementation, testing, and maintenance. However, instead of applying these stages once in a linear sequence, the Incremental Build Model iterates over them in multiple cycles or increments.
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Requirements Gathering: This involves identifying and documenting the software requirements.
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System Design: This stage involves designing the software architecture.
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Implementation: Each increment is developed based on the design, adding to the functionality of the previous increment.
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Testing: Each increment is tested for functionality and compatibility with the existing system.
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Maintenance: The process of continuously updating and refining the software based on feedback and changes in requirements.
Key Features of the Incremental Build Model
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Iterative: The model emphasizes building the software in increments, with each iteration adding more functionality.
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Flexible: It allows for changes and modifications in the later stages of software development.
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Reduced Risks: Early iterations serve as a prototype that helps in identifying any design flaws.
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User Feedback: Frequent delivery of software builds allows for user feedback and validation.
Types of Incremental Build Model
There are two primary types of Incremental Build Models:
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Sequential Model: In this model, each phase starts only after the previous phase is complete. Each increment adds new functionalities to the preceding increment.
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Parallel Model: In this model, multiple increments are developed and implemented simultaneously.
Implementing the Incremental Build Model: Challenges and Solutions
Some challenges may arise when implementing the Incremental Build Model:
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Complex Management: Managing multiple builds can be challenging. An efficient project management tool can solve this problem.
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Overlapping Increments: There may be overlap between increments in the parallel model, leading to confusion. Clear documentation and communication can prevent this.
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Dependency Issues: Later increments may rely on earlier increments. Planning and thorough design can alleviate this issue.
Comparisons with Similar Models
| Feature | Incremental Build Model | Waterfall Model | Agile Model |
|---|---|---|---|
| Flexibility | High | Low | High |
| Risk Management | Medium | High | Low |
| User Involvement | Medium | Low | High |
| Speed of Delivery | Medium | Slow | Fast |
Future Perspectives: The Incremental Build Model
With rapid technological advancement and evolving software needs, the Incremental Build Model is likely to continue to be a preferred method for software development. Its flexible structure and emphasis on iterative improvement make it ideal for developing complex software systems in dynamic technological landscapes.
Proxy Servers and the Incremental Build Model
The Incremental Build Model could be particularly useful in the development of proxy servers. By working incrementally, providers like OneProxy can add new functionalities, test them and get user feedback before the next build. This allows for continuous improvement and adaptation to changing user needs.
