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; customers initiate purchases via Process Customer Purchase, triggering Process Payment that updates Sales Records for manager oversight. This DFD demonstrates end-to-end retail operations from supply chain intake through customer settlement, ensuring inventory accuracy and payment reconciliation. Fork this diagram on Diagrams.so to customize for your supermarket chain, add AWS Lambda functions for automation, or export as .drawio to integrate into your business process documentation. The separation of inventory and sales data stores enables independent auditing and real-time stock visibility.