1. Data flow diagrams (DFDs) are one of the techniques commonly used to document the detail of business processes for an enterprise. Figure 1 shows the DFD for an online company used to document its business process for creating a customer invoice. Customer Customer Credit Request Order Information Credit Card Company Order Response Email Invoice Customer Credit Confirmation 1.0 Process Customer Order Order Information Warehouse Delivery Information 2.0 Process Shipping Customer Sales Order Sales Order Line Item Figure 1: DFD for an online company a) Write a narrative for the business activity. b) Annotate the narrative. c) Create an event-agent-database (EAD) table. Billing Information 3.0 Generate Invoice