ProcessSale (Diagram)

4) How many times does the system go through the "EnterItem - Description, subtotal" loop?

5) How many objects are explicitly destroyed during the ProcessSale interaction?

6) List a pair of messages that could have been represented as an exclusive conditional pair? What would the condition be?

7) According to Common UML Interaction Diagram notation as described by Larman, what is wrong with the representation of each "Create" message in the diagram?

Cashier Register MakeNewSale Create Sale mare items Loop Enterltem(itemID, quantity) Enterltem(itemlD, quantity) CreatelitemID, quantity), SaleLineltem getSubTotal(itemlD) Create subTotal getDesaription(itemID) desaription getTaxableCodelitemlD) taxableCode getPriceDesaription TaxableCodeitemlD) prion, desaription, taxableCode desaription, subTotal desaription, subTotal EndSale getTotal Create(looationCode) TaxCalaulator getTax(SaleLineltems) Totsl EnterCashPayment(amount) EnterCashPaymentamount) areate cash Tendered) Payment authorize changeDue, receipt changeDue acceptedMessage create update(salelD, subTotel, Tax) reate InventoryDB update(salelD, SaleLineltems) Process Sale Cashier Register MakeNewSale Create Sale mare items Loop Enterltem(itemID, quantity) Enterltem(itemlD, quantity) CreatelitemID, quantity), SaleLineltem getSubTotal(itemlD) Create subTotal getDesaription(itemID) desaription getTaxableCodelitemlD) taxableCode getPriceDesaription TaxableCodeitemlD) prion, desaription, taxableCode desaription, subTotal desaription, subTotal EndSale getTotal Create(looationCode) TaxCalaulator getTax(SaleLineltems) Totsl EnterCashPayment(amount) EnterCashPaymentamount) areate cash Tendered) Payment authorize changeDue, receipt changeDue acceptedMessage create update(salelD, subTotel, Tax) reate InventoryDB update(salelD, SaleLineltems) Process Sale