The Big Bang model of SDLC has no certain technique for working on software development project. A project may start with just a basic amount of money and resources to begin with. Big bang model of working involves least planning and no such formal method is followed. This kind of model is adopted in cases where the customer is not sure about his wants and the requirements are not analysed that well.
The requirements in this model are understood and implemented as and when they start coming. The focus primarily remains in writing code and delivering the final product. For reasons like no planning and analysis, this model tends to be much riskier than other models.
A Big bang model is comparatively a very simple model. This model emphasises testing of modules as and when they are ready. Modules are integrated and test cases are executed to see whether there is any presence of defect. So let us summarise the design of Big bang model as follows:
Hence we get an idea that this model is not suitable for large projects which inherently involves a lot of complexities. Although not a widely used model, it can be used for projects that is less complicated in nature and people involved in the project are well versed with the technology or programming language that would be used to develop the application.