요청 내용
“Create a level-one online checkout data flow diagram: a customer places an order, customer and order databases exchange data with the order process, a payment gateway approves payment, a carrier receives shipping details, inventory is updated, and the customer receives status.”
그렇다면Add an order-cancellation process.Add a refund status flow from the payment gateway.
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01
Using flowchart shapes to represent DFD components
02
Bidirectional arrows for read/write operations on data stores
03
Including status notification to customer
When designing an e-commerce checkout subsystem to identify major data flows and interactions.