Prepare a context-, intermediate-, and elementary- level data flow diagram for Sawicki Music Supply. For the elementary-level diagram, explode the inventory function.

2. DATA FLOW DIAGRAMS  Sawicki Music Supply is a mail-order business that accepts merchandise orders by telephone and mail. All payments must be prepaid with a major credit card. Once an order is received, either the item is found in inventory and shipped immediately, the item is not found in inventory and is ordered from […]