What is the Spiral Model?

Spiral Model: Use in Software Engineering

The Spiral Model was proposed by Boehm in 1985. Because the shape of this model is spiral, it is called the Spiral Model.

Features of the Spiral Model

The Spiral Model includes both the Waterfall Model and the Prototype Model, meaning it is a combination of both. This model is used for large projects. It is not used for small projects, and this model is very expensive.

Phases of the Spiral Model

The Spiral Model has the following 4 phases:

• 1. Planning

  In the Planning phase, all our requirements are gathered. In this phase, we discuss the goals of the software and decide what we want to achieve with the software.

• 2. Risk Analysis

  In the Risk Analysis phase, we identify all the risks, and if any risk is found, we find a solution for it. This phase is very important for the successful execution of the project because potential problems are identified in advance.

• 3. Engineering

  In the Engineering phase, coding and testing are done. The entire process of software development comes in this phase. The structure of the system is prepared, and various modules are integrated.

• 4. Evaluation

  In the Evaluation phase, the software that has been prepared is evaluated by the customer, and they give their feedback. The main objective of this phase is to ensure that the software meets the customer's requirements and expectations.

Advantages of the Spiral Model

The Spiral Model has several advantages that make it suitable for large and complex projects:

1. The ability to identify and resolve risks involved in the system at an early stage.
2. The opportunity to better understand the customer's requirements and involve them in every stage of the project.
3. The process of receiving reviews and feedback after each stage, which improves quality.

Disadvantages of the Spiral Model

Although the Spiral Model has many advantages, it also has some disadvantages:

1. This model can be very expensive, so it is not considered suitable for small projects.
2. It requires more time because reviews and feedback are taken after each phase.
3. Due to the complexity of the Spiral Model, experienced managers and teams are required to implement and manage it.