Wednesday, 1 November 2017

SDLC Models for Software Development

For software development to happen with the least costing in a short span that is of the highest standards, there are certain tasks that have to be performed which are used to design, develop and test the software within a framework which is called software development life cycle (SDLC). Each software that comes as a final product goes through few stages in the software development lifecycle like identification of requirement, design, software building, testing, deployment and maintenance which are handled by IT consultants. A software development lifecycle gives a proper planning to get the work done from the start to the end of a project eliminating the chances of skipping a step or process. 

Depending on the project aims and goals, various processes or methods are used by the IT consultants in the development of the project, which are called software development models. Different models indicate the different process stages and the order in which these stages are being carried out. Let us see the different software development models that are used by the IT support professionals.

  • Waterfall Model – This is one of the oldest methodologies of the software development models and in this model, the testing commences only after the completion of a phase. This can be understood as a model with the linear sequential flow which means progress in a project is seen flowing downwards like a waterfall. This kind of testing identifies defects and errors only at the end of the phase and does not facilitate the process to go back to the previous phase to handle any changes if required. This results in high costs for fixing any issues. 
  • V-Shaped Model – This can also be understood as the ‘verification and validation’ model. In this model, testing happens simultaneously with the development. Like the waterfall model, in this model also, each stage begins only after the previous stage is finished.
  • Prototype model – In this model prototypes of software applications are created and these are used to mitigate the gap between customer requirements and development team. This model is helpful for complicated and large systems where the requirements are not known as there is no existing system. This model has different types like Throwaway, Evolutionary, Incremental, and Extreme
  • Iterative Model – This kind of SDLC model does not require all the specifications of requirements. Development starts by implementing just a part of the software, which is then reviewed so that further requirements can be identified. This process is repeated for each cycle of the model producing a new version of the software.
  • Spiral Model - This model is a combination of the waterfall model and prototyping model features. This uses many phases like in the waterfall model and builds prototypes and simulations like the prototyping model.
  • Agile Model – Agile model is the most used model these days as it quickly delivers a working product by breaking the product into cycles. This model helps in creating newer versions of releases with incremental changes to the previous release.

Choosing an appropriate software development lifecycle model is significant to achieve success in a project which requires enough experience and knowledge, which the IT support professionals in software development in Hyderabad can provide. For all the software development needs, visit Accuprosys, the best software development consultants in Hyderabad.