Software Development Life Cycle Sdlc Questions Long
The iterative model is a software development life cycle (SDLC) approach that involves repeating a set of activities in a cyclical manner. It is also known as the iterative and incremental model, as it focuses on delivering a working product incrementally through multiple iterations.
In the iterative model, the development process is divided into small iterations, each consisting of the phases of the SDLC, such as requirements gathering, design, implementation, testing, and deployment. Each iteration aims to deliver a working and potentially shippable product increment. The iterations are repeated until the final product is achieved.
The key characteristics of the iterative model are as follows:
1. Incremental Development: The development process is divided into small increments, allowing for the delivery of a functional product increment at the end of each iteration. This enables early feedback and validation from stakeholders.
2. Feedback-driven: The iterative model emphasizes continuous feedback from stakeholders, including end-users, clients, and developers. This feedback helps in refining and improving the product with each iteration.
3. Flexibility: The iterative model allows for flexibility and adaptability to changing requirements. As each iteration delivers a working product increment, it becomes easier to incorporate changes and enhancements based on feedback received.
4. Risk Management: The iterative model helps in managing project risks effectively. By delivering working increments early on, potential risks and issues can be identified and addressed in subsequent iterations, reducing the overall project risk.
5. Collaboration: The iterative model promotes collaboration and communication among team members and stakeholders. Regular feedback and involvement of stakeholders ensure that the final product meets their expectations.
The iterative model follows a cyclical process, where each iteration consists of the following phases:
1. Requirements Gathering: In this phase, the requirements for the product are identified and documented. The requirements are prioritized based on their importance and feasibility.
2. Design: The design phase involves creating a high-level and detailed design of the product based on the requirements gathered. The design includes architecture, user interface, and database design.
3. Implementation: The implementation phase involves coding and development of the product based on the design specifications. The code is tested and reviewed to ensure its quality.
4. Testing: The testing phase focuses on verifying and validating the product against the requirements. Different types of testing, such as unit testing, integration testing, and system testing, are performed to ensure the product's quality.
5. Deployment: In this phase, the working product increment is deployed to the end-users or clients for their evaluation and feedback. The feedback received is used to refine and improve the product in subsequent iterations.
6. Evaluation and Feedback: The feedback received from stakeholders is analyzed, and necessary changes and enhancements are incorporated into the next iteration. This feedback loop continues until the final product is achieved.
Overall, the iterative model of the SDLC provides a flexible and adaptive approach to software development. It allows for early delivery of working product increments, continuous feedback, and effective risk management, resulting in a high-quality and customer-centric final product.