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Use Cases – POS (Point of Sale) Examples
Eunjee Song
C t S i D t t
Eunjee Song Use Cases-1
Computer Science Department
Baylor University
Levels of rigor
Brief: One paragraph summaries of functionalityfunctionality
Casual: Multiple paragraphs that cover multiple scenarios
Fully-dressed (Detailed): Structured, detailed description of scenarios
Eunjee Song Use Cases-2
2
Process Sale: A customer arrives at a checkout with items topurchase. The cashier uses the POS system to record each
Brief Use Case example
purchase. The cashier uses the POS system to record eachpurchased item. The system presents a running total and line-item details. The customer enters payment information, whichthe system validates and records. The system updatesinventory. The customer receives a receipt from the systemand then leaves with the items.
Eunjee Song
Handle Returns
Main Success Scenario: A customer arrives at a checkout withitems to return. The cashier uses the POS system to record each
Casual Use Case example
returned item….
Alternate Scenarios:
The customer paid by credit, and the reimbursement transaction totheir credit account id rejected, inform the customer and pay themwith cash.
Eunjee Song
If the item identification is not found in the system, notify theCashier and suggest manual entry of the identification code(perhaps it is corrupted).
If the system detects failure to communicate with the externalaccounting system, ….