Spiral model pdf

It gives the facility to involve the client in every iteration. This helps to overcome the drawbacks of the existing system. With this model, we can be more successful in getting customer satisfaction over time.

This has been a guide to What is Spiral Model?. You can also go through our other suggested articles to learn more —. The initial phase of the Spiral model is the early stages of Waterfall Life Cycle that are needed to develop a software product. This model supports risk handling, and the project is delivered in loops.

Each loop in the Spiral model is the phases of the software development process. The popular spiral model is a blend of both iterative development method as well as sequential improvement model, i. It combines aspects of the incremental build model, waterfall model and prototyping model, but is distinguished by a set of six invariant characteristics.

It represents five of the development models namely, waterfall, Iteration, V-shaped, spiral and Extreme programming. These models have advantages and disadvantages as well. Therefore, the main objective of this research is to represent different models of software The Spiral Life Cycle Model is a type of iterative software development model which is generally implemented in high risk projects.

In this system development method, we combine the features of both, The need for new development processes becomes apparent as the complexity and cost of developing software systems increase.

Many processes have evolved that attempt to improve upon the weaknesses of the traditional waterfall model. It is one of the most preferred Software Development Life Cycle models for large and high-risk projects.

Spiral model works in an iterative nature. It is a combination of both Prototype development process and Linear development process waterfall model. Spiral Model in software testing is the testing strategy which works on incremental and prototype technique. Generally Spiral Model strategy is followed for the large and complicated projects where risks are high and development and testing goes on incremental basis.

Spiral Model is also known as Spiral Lifecycle Model. The Spiral Model was introduced by Barry Boehm in This model is What is the Spiral Model? The diagrammatic representation of this model appears like a spiral with many loops. The exact number of loops in the spiral is not fixed.

Each loop of the spiral represents a phase of the software process. For example, the innermost loop might be concerned with feasibility study. The next loop with requirements specification, the What is spiral model spiral lifecycle model. Tahap planning Tahap perencanaan meliputi estimasi biaya yang digunakan, batas waktu, pengaturan jadwal, identifikasi lingkungan kerja, sumber-sumber informasi untuk melakukan iterasi Teknik perulangan.

Tahap analisis risiko Tahap analisis reisiki berfungsi untuk mengidentifikasi resiko yang berpotensi akan terjadi dan menghasilkan solusi alternatif secara teknis dan manajemen saat strategi mitigasi upaya untuk mengurangi resiko bencana direncanakan dan diselesaikan.

Kelebihan dalam menggunakan model spiral : Pembangunan dan perubahan perangkat lunak yang terjadi dapat diselesaikan secara sistematis Mudah dalam mengestimasi biaya karena proses pembuatan prototype yang jelas dan terencana dalam tahapan yang sistematis Manajemen dan analisa risiko yang lebih cepat dan mudah Mudah dalam melakukan perubahan kebutuhan dan dokumentasi Produksi software bisa terjadi lebih cepat Kekurangan dalam menggunakan model spiral : Tidak cocok dan sulit diimplementasikan dalam projek kecil Memakan waktu yang cukup lama Membutuhkan best practice atau pengalaman sebelumnya karena proses yang sangat kompleks Resiko dalam tahap planning cukup besar.

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