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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

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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.

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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.

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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, ….

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Fully-dressed Use Case example

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