Data Flow

E-Commerce Checkout: Level-0 Context DFD

Data Flow Diagrams (DFD) · made in Skemio

Level-0 DFD displaying Customer, Payment Gateway, and Warehouse interacting with Auth, Checkout, and Order Capture processes and session data stores.
Level-0 DFD displaying Customer, Payment Gateway, and Warehouse interacting with Auth, Checkout, and Order Capture processes and session data stores.
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What it shows

  • Context DFDs isolate system scope before detailing internal workflows.
  • External actors interface strictly with processes, never raw datastores.
  • Clarifying payment and shipping boundaries prevents auth leakage early.

The takeaway

Define strict external boundaries at Level 0 before analyzing internal steps.

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