The Spiral model combines principles from the Waterfall model and the Iterative model.

1. Waterfall Model: This model is a sequential design process, often used in software development processes, where progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance.

2. Iterative Model: This model is a particular implementation of a software development life cycle (SDLC) that focuses on an initial, simplified implementation, which then progressively gains more complexity and a broader feature set until the final system is complete.

In the Spiral model, the software is developed in a series of incremental releases. Early iterations, or spirals, produce prototypes. Later spirals produce increasingly complete versions of the engineered system.

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The Spiral model combines principles from the Waterfall model and the Iterative model.

1. Waterfall Model: This model is a sequential design process, often used in software development processes, where progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance.

2. Iterative Model: This model is a particular implementation of a software development life cycle (SDLC) that focuses on an initial, simplified implementation, which then progressively gains more complexity and a broader feature set until the final system is complete.

In the Spiral model, the software is developed in a series of incremental releases. Early iterations, or spirals, produce prototypes. Later spirals produce increasingly complete versions of the engineered system.

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The Spiral model combines principles from the Waterfall model and the Iterative model.

1. Waterfall Model: This model is a sequential design process, often used in software development processes, where progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance.

2. Iterative Model: This model is a particular implementation of a software development life cycle (SDLC) that focuses on an initial, simplified implementation, which then progressively gains more complexity and a broader feature set until the final system is complete.

In the Spiral model, the software is developed in a series of incremental releases. Early iterations, or spirals, produce prototypes. Later spirals produce increasingly complete versions of the engineered system.

he Spiral model combines principles from which two other software development models?

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