Iterative Waterfall Model with example in Hindi

Summary

The iterative waterfall model, a modification of the classical waterfall model, introduces feedback mechanisms to address issues that arise during later stages, preventing them from propagating further. Unlike the classical model, which lacks feedback, the iterative version allows for changes based on detected problems in testing or design phases. However, feedback is not present in the feasibility study phase. The model retains the simplicity and ease of the base model, making it suitable for small projects. Despite the addition of feedback, it still suffers from the same disadvantages as the classical model, including no phase overlapping, no intermediate delivery, rigidity in requirements, and less customer interaction.

Takeaways

• 🔄 **Iterative Waterfall Model**: A modified version of the classical waterfall model that includes feedback mechanisms.
• 🔁 **Feedback Mechanism**: Allows for the detection and correction of issues in later stages by communicating back to earlier stages, unlike the classical model.
• ⛔ **No Feedback in Feasibility**: Once a commitment is made in the feasibility study, there's no turning back, emphasizing the importance of initial decision-making.
• 📉 **Advantages Retained**: The iterative model retains the simplicity and ease of the classical model, making it suitable for small projects.
• 🔒 **Rigidity in Requirements**: Despite feedback, the model maintains a rigid structure where requirements, once set, are not easily changed.
• 🚫 **No Phase Overlapping**: Each phase must be completed before the next begins, preventing parallel development.
• 🚚 **No Intermediate Delivery**: The product is delivered in its entirety upon completion, with no partial or prototype deliveries in between.
• 🤝 **Limited Customer Interaction**: Customer interaction is minimal, with most engagement occurring at the beginning and end of the project.
• 🔍 **Focus on Detection and Correction**: The model emphasizes the importance of detecting and correcting errors as they arise, rather than waiting until the end of the project.
• 📋 **Documentation Importance**: The script implies the significance of proper documentation, such as the SRS document, in guiding the development process.

Q & A

What is the iterative waterfall model?

The iterative waterfall model is a modified version of the classical waterfall model, which incorporates feedback mechanisms to address issues detected in later stages of the software development process.

How does feedback work in the iterative waterfall model?

In the iterative waterfall model, feedback allows for the detection of problems in later stages, such as during testing, and the communication of these issues back to earlier stages, like design or coding, for necessary revisions.

What is the main difference between the classical waterfall model and the iterative waterfall model?

The main difference is the inclusion of feedback in the iterative model, which was absent in the classical model, leading to the propagation of errors through stages without the possibility of correction.

Are there any stages in the iterative waterfall model where feedback is not applicable?

Yes, feedback is not applicable in the feasibility study stage of the iterative waterfall model, as once a commitment is made to develop the software, it is expected to be followed through.

What are the advantages of the iterative waterfall model?

The advantages include simplicity and ease of use, suitability for small projects, and the introduction of feedback to correct mistakes, which was a limitation in the classical model.

What are the disadvantages of the iterative waterfall model?

The disadvantages include no phase overlapping, which means a linear progression without parallel work, no intermediate delivery of the product, rigidity in requirements that are not easily changed once set, and less customer interaction.

How does the iterative waterfall model handle requirements changes?

The iterative waterfall model allows for feedback to correct issues but does not support frequent changes in requirements. Once requirements are fixed, they are expected to remain unchanged throughout the project.

Can you explain the concept of 'no phase overlapping' in the iterative waterfall model?

No phase overlapping means that each phase of the software development process must be completed before the next phase can begin, preventing parallel work and the ability to work on multiple phases simultaneously.

What does 'no intermediate delivery' imply in the context of the iterative waterfall model?

'No intermediate delivery' means that the software product is delivered to the customer only after the entire development process is completed, with no partial or prototype deliveries in between.

How does the iterative waterfall model affect customer interaction?

Customer interaction is limited in the iterative waterfall model, as the customer's involvement is mostly at the beginning for requirement gathering and at the end for the final product delivery, with minimal interaction during the development stages.

Is the iterative waterfall model suitable for complex projects?

The iterative waterfall model may not be suitable for complex projects due to its rigid structure and lack of flexibility in handling changes and customer feedback throughout the development process.