Data processing environment: The solution to the issue of demand and supply needs noteworthy quantity of computer resources, for both run-time necessities and the data storage necessities as is depicted by planning systems of the nature described in case. The upper limit level of detail and complexity of the system will be found by the constraints made obligatory by the company's data processing system, unless they decide to bring external facilities to use. If external facilities are being used in that situation the capabilities of the external system have to be assessed.