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Process Sale Scenario using SSD Diagram

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Questions and Answers

What is the role of the actor Cashier in the Process Sale Scenario?

Processing transactions and handling returns

Managing system updates and maintaining the database

Initiating and finalizing sales and entering item details (correct)

Updating inventory and managing customer data

Which statement accurately describes the 'EnterItem(itemID, quantity)' event?

It can occur multiple times, with the system responding with item description and total. (correct)

It captures payment details and processes the transaction.

It occurs only once and updates the system with the quantity of items added.

It finalizes the sales process by providing the total with taxes.

During which event does the system respond with the total including taxes?

EndSale() (correct)

MakeNewSale()

EnterItem(itemID, quantity)

MakePayment(amount)

What is the system’s response to the 'MakePayment(amount)' event?

Change due and receipt Signup and view all the answers

What is the significance of representing the System as a 'black box' in the diagram?

It highlights only the input and output events between the actors and the system. Signup and view all the answers

What type of abstraction does the event 'EndSale()' represent?

An abstraction of acknowledging the request without a return value Signup and view all the answers

Study Notes

SSD Overview

All systems are treated as a black box in SSD.
The diagram focuses on events that cross the system boundary from actors to systems.

Process Sale Scenario

The scenario involves a Cashier interacting with a system to process a sale.
The Cashier is represented as a stick figure, and the System is represented as a black box.

Events

MakeNewSale() event: The Cashier starts a new sale, and the System acknowledges the request without returning a value.
EnterItem(itemID, quantity) event:
- The Cashier enters an item, its ID, and quantity.
- The System responds with the item's description and total.
- This event can occur multiple times.
EndSale() event:
- The Cashier ends the sale.
- The System responds with the total with taxes.
- This event does not have a return value.
MakePayment(amount) event:
- The Cashier makes a payment.
- The System responds with the change due and receipt.
Abstract events:
- The System receives payment data via some mechanism not shown on the diagram.
- The System responds with the change due and receipt.

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Description

This quiz is about a scenario where a Cashier interacts with a system to process a sale using System Sequence Diagrams (SSD). The Cashier's role is represented as a stick figure, and the System is represented as a black box.