Data Flow Diagram: Sawicki Music Supply Is A Mail Order Busi

Data Flow Diagramsawicki Music Supply Is A Mail Order Business Tha

Data Flow Diagramsawicki Music Supply Is A Mail Order Business Tha

Develop a context diagram, an intermediate-level diagram, and an elementary-level data flow diagram for Sawicki Music Supply. For the elementary-level diagram, explode the inventory function to detail its processes.

Paper For Above instruction

Sawicki Music Supply operates as a mail-order business that processes merchandise orders received via telephone and mail. Customers are required to prepay for their orders using a major credit card. When an order is received, the system must determine whether the item is currently in inventory, not in inventory, or no longer stocked. If the item is available in stock, it is shipped immediately. If it is not in stock, the system initiates an order from the manufacturer. If the item is no longer stocked, the customer receives a notification informing them of this status. To model these processes effectively, various levels of data flow diagrams are necessary, including a high-level context diagram, a more detailed intermediate diagram, and a detailed elementary diagram that breaks down key functions like inventory management.

The context diagram illustrates the entire process as a single process interacting with external entities such as customers, manufacturers, and the payment processors. It captures the overall data exchanges, including orders from customers, payments, inventory status updates, and notifications to customers.

The intermediate diagram decomposes the main process into major subprocesses including order reception, payment processing, inventory check, shipping, and notifications. It also visually demonstrates the data flows between these subprocesses and external entities, providing a clearer understanding of the system's mechanics without overwhelming detail.

Finally, the elementary-level diagram further breaks down the core sub processes, particularly focusing on inventory management. This includes sub-processes such as inventory lookup, stock updating, reordering from manufacturers, and inventory notifications. By exploding the inventory function, we can better understand how stock levels are maintained, how reordering decisions are triggered, and how data flows within the inventory management process. This detailed diagram aids in pinpointing operational inefficiencies and designing accurate system requirements.

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