Software Development: Incremental Process Model

Study Notes

Incremental Process Model

A simple system with basic features is built first, then delivered, followed by successive iterations until the desired system is complete.
Modules A, B, and C are incrementally developed and delivered as part of the software product.

Phases of Incremental Model

Requirements Analysis: Plans are made only for the next increment, allowing flexible modifications based on customer needs.
Design & Development: Core features are developed first, with successive refinements adding new capabilities in later versions.
Deployment and Testing: Each increment is constructed, tested, and deployed at the customer site. Testing ensures the model's processes are verified.
Implementation: Final version (version n) is deployed at the client site after all increments are completed.

Types of Incremental Model

Staged Delivery Model: Constructs one part of the project at a time for focused implementation.
Parallel Development Model: Develops different subsystems simultaneously, potentially shortening development time if resources allow.

When to Use the Incremental Process Model

Beneficial when funding schedules, risk, and program complexity require early realization of benefits.
Suitable when requirements are well-defined upfront and for projects with extensive development times or new technology.
Effective for error reduction as core modules are tested early in the process.
Allows for breakdown of tasks, lowering initial delivery costs while deploying resources incrementally.

Characteristics of Incremental Process Model

System development is split into smaller projects for gradual completion.
Prioritizes critical requirements first; once agreed upon, they remain fixed for that increment.

Advantages of the Incremental Process Model

Accelerates software delivery and gives clients clear project visibility.
Facilitates easy implementation of changes and handles risks effectively through iterative cycles.
Flexibility in adjusting criteria and scope at a lower cost compared to other models.
Simplifies error identification process.

Disadvantages of the Incremental Process Model

Requires a skilled team and thorough planning to succeed.
Costs may increase due to continuous iterations.
Potential design issues if all requirements are not gathered initially can complicate the overall lifecycle.
Distinct iteration steps may lack seamless flow, leading to time-consuming fixes across units.

Description

Explore the incremental process model of software development through this quiz. Delve into the phases and modules that are progressively delivered to customers, ensuring an evolving system that meets requirements effectively. Test your understanding of this specific model and its application in software engineering.