The essence of a case study, the central tendency among all types of case studies, is that they try to illuminate a decision or set of decisions: why they were implemented, and with what result? The scope of a case study: A case study is an empirical inquiry that investigated a contemporary phenomenon within its real-life context, especially when the boundaries between phenomenon and context are not clearly evident. In other words, researchers typically use the case study method because they deliberately want to cover contextual conditions- believing that they might be highly pertinent to their phenomenon of taudy; and The case study inquiry copes with the technically distinctive situation in which there will be many more variables of interest than data points, and more than one result.