Invoicing System Case Study - Order Processing and Stock Management

15. We will now use a simple case study to illustrate the ideas of the previous section. Our example is that of an invoicing system, where an invoice clerk enters orders to be invoiced in a batch fashion. All orders entered must be orders that already exist in the system (although we do not need to consider how those orders are entered), and when processed an order will be marked invoiced if there is enough stock to fill the order, otherwise it will be left as pending. We do not need to consider stock control, as that is done outside the system. Richard Shore, A Use Case Interpretation of B AMN, University of Teesside, Middlesbrough, Cleaveland TS1 3BA, UK

16. Richard Shore, A Use Case Interpretation of B AMN, University of Teesside, Middlesbrough, Cleaveland TS1 3BA, UK