Where is spiral model used

Let's reshape it today. Corning Gorilla Glass TougherTogether. ET India Inc. ET Engage. ET Secure IT. Suggest a new Definition Proposed definitions will be considered for inclusion in the Economictimes. Description: Software maintenance is a vast activity which includes optimization, error correction, deletion of discarded features and enhancement of existing features.

Since these changes are necessary, a mechanism must be created for estimation, controlling and making modifications. The essential part of software maintenance requires preparation of an accurate plan during the development cycle. Hence, a focus on maintenance definitely helps keep costs down. Systems Design Definition: Systems design is the process of defining elements of a system like modules, architecture, components and their interfaces and data for a system based on the specified requirements.

Description: A systemic approach is required for a coherent and well-running system. Bottom-Up or Top-Down approach is required to take into account all related variables of the system. A designer uses the modelling languages to express the information and knowledge in a structure of system that is defined by a consistent set of rules and definitions.

The designs can be defined in graphical or textual modelling languages. Some of the examples of graphical modelling languages are a. Flowchart : A schematic or stepwise representation of an algorithm. Design methods: 1 Architectural design: To describes the views, models, behaviour, and structure of the system. Definition: The spiral model is similar to the incremental development for a system, with more emphasis placed on risk analysis.

Description: These phases are - Planning: This phase starts with the gathering of business requirements. In the subsequent spirals as the product matures, identification of system requirements and unit requirements are done in this phase. The spiral model is similar to the incremental model , with more emphasis placed on risk analysis. A software project repeatedly passes through these phases in iterations called Spirals in this model.

The baseline spiral, starting in the planning phase, requirements are gathered and risk is assessed. Each subsequent spirals builds on the baseline spiral. Its one of the software development models like Waterfall , Agile , V-Model. Barry Boehm talked about some misconceptions that came about due to the over-simplifications of the original diagram of the spiral model.

He stated some of them which are:. These misconceptions are not true for most projects even though they may fit the risk patterns of some projects. Barry Boehm gave four activities that must take place in each of the cycles of the spiral model.

They are explained below:. An important point to note is that the development stage is dependent on the remainder of the risks. For instance, if the user-interface or performance risks are treated more seriously than the program development risks, then the next stage may evolve and can include developing a detailed prototype for finding a solution to the risks. Generally speaking, a project that makes use of the spiral model should possess four phases.

The gaming industry is one industry where spiral models are used extensively. One main reason is that the model allows the creation of prototypes with rapidity and care; since the gaming industry strongly relies on the initial versions of games created. One other reason why spiral models are adopted is because of the feedback that businesses involved in game creation can get, and also how fast they can get it.

Microsoft also uses the spiral SLC model to kickstart new versions of Windows. The software used in creating the Gantt chart was also created using the spiral model. These large industries find it easy to use the spiral model for large projects because the project is of high risk, and are targeted to a large audience. As do other SDLC models, the spiral model has some advantages as well as some weaknesses. The advantages are:. The software industry is the industry where the spiral used is mostly used.

This is because the industry follows the natural development process of any product to be produced. The following conditions explain when a spiral model is applied. In a spiral model, each spiral can be called a loop which is a separate development process. The four phases form the intermediary stages of a spiral model and the activities are repeated for each loop.

The spiral model is suitable for large projects because it makes it easy to develop and also deliver smaller prototypes which are then enhanced to produce the larger software. Experience is required when implementing the spiral model because risk analysis plays an integral role in this model and risk analysis needs expertise. This makes the spiral model expensive and not suitable for small projects. Your email address will not be published.

Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. What Is Spiral Model?

History of Spiral Model A man named Barry Boehm was the first individual to describe the spiral model. He stated some of them which are: That every activity shown in the diagram must be actualized. The below diagram shows the different phases of the Spiral Model: —. Skip to content. Change Language. Related Articles. Introduction of Software Engineering.

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