Discusses the “Levels of Abstraction” of requirements. A business function describes what needs to bedone, whereas a business process describes how it can be done. For example, a the business function of providing customerservice can be implemented by different processes that include the process of a customer support center or the process of self--service on the Web. Provide a different example of a business function and discuss at least two business processes that can beused to implement the function. Examine the techniques , and describe a technique for modeling business functions and a techniquefor modeling business process.