Podcast
Questions and Answers
In a Point of Sale (POS) system, what step follows the cashier entering the item identifier?
In a Point of Sale (POS) system, what step follows the cashier entering the item identifier?
- System records sale line item (correct)
- Cashier repeats steps 3-4 until done
- System presents total with taxes calculated
- System handles payment
What is the purpose of the 'makeNewSale' operation in the POS domain model?
What is the purpose of the 'makeNewSale' operation in the POS domain model?
- To calculate the total with taxes
- To process a completed sale
- To initialize a new sale instance (correct)
- To handle customer payment
Which entity in the POS domain model is associated with the 'enterItem' operation?
Which entity in the POS domain model is associated with the 'enterItem' operation?
- Register
- Sale (correct)
- Cashier
- Customer
What triggers the system to present the total with taxes calculated in a POS system?
What triggers the system to present the total with taxes calculated in a POS system?
Which operation in the POS domain model involves 'currentDate(), currentTime(), and nextSaleNum()'?
Which operation in the POS domain model involves 'currentDate(), currentTime(), and nextSaleNum()'?
What is the main purpose of the 'Logscompleted' entity in the POS domain model?
What is the main purpose of the 'Logscompleted' entity in the POS domain model?
What aspect of the system does an operation contract help identify?
What aspect of the system does an operation contract help identify?
What do preconditions in an operation contract describe?
What do preconditions in an operation contract describe?
Which section of an operation contract is considered the most important?
Which section of an operation contract is considered the most important?
What is NOT included in the postconditions section of an operation contract?
What is NOT included in the postconditions section of an operation contract?
What does a domain model help generate when creating an operation contract?
What does a domain model help generate when creating an operation contract?
When creating an operation contract, what should be described regarding the system?
When creating an operation contract, what should be described regarding the system?
What happens as a postcondition of the 'enterItem' operation?
What happens as a postcondition of the 'enterItem' operation?
What is an outcome of the 'makePayment' operation postconditions?
What is an outcome of the 'makePayment' operation postconditions?
What does the 'endSale' operation modify?
What does the 'endSale' operation modify?
In the 'enterItem' operation, what is initialized to the input quantity?
In the 'enterItem' operation, what is initialized to the input quantity?
What does the 'makePayment' operation associate 'p' with?
What does the 'makePayment' operation associate 'p' with?
In the postconditions of 'enterItem', how many associations are created with 'ProductSpecification1'?
In the postconditions of 'enterItem', how many associations are created with 'ProductSpecification1'?
