Chijohnz Supermarket's purchasing and payment data flow diagram orchestrates goods receipt, inventory management, customer transactions, and payment processing across four core processes. Supplier goods flow through Receive Goods into Inventory Records, which feed Manage Inventory and subsequently Process Customer Purchase, with payments routed through Process Payment to Sales Records for manager oversight. This DFD demonstrates how retail operations integrate procurement, stock control, and point-of-sale functions while maintaining audit trails through persistent data stores. Fork this diagram on Diagrams.so to customize it for your supermarket chain, add AWS Lambda or RDS backends, or export as .drawio for Lucidchart integration. The separation of inventory and sales records enables independent reporting and reconciliation workflows critical for retail compliance.