What assumptions do you have to ma ke about the ABM's environment (e.g., that the machine has sufficient cash) for your proofs to succeed?

ll. Sometimes part of a system may be built quickly to demonstrate feasibility or functionality to a customer. This prototype system is usually incomplete; the real system is constructed after the custome r and developer evaluate the prototype. Should the system requirements document be written before or after a prototype is developed? Why?

U . Write a set of UML models (use-case diagram, MSC diagrams, class diagram) for an online telephone directory to replace the phone book that is provided to you by your phone company. The directory should be able to provide phone numbers when presented with a name; it showld also list area codes for different parts of the country and gene rate emergency telephone numbers for your a rea.