Use Cases

ATM Session

• A user inserts a bank card into tha ATM.
• The card reader reads the card.
• The user is asked to enter the PIN.
• The user enters the PIN.
• The main menu is displayed.
• The user choose a transaction.
• The transaction is performed.
• The system returns to main menu.
• The user choose CANCEL.
• The card is returned.
• A receipt of all transactions is printed.
• The machine becomes idle.

Deposit Transaction

• The user choose the deposit transaction from the main menu.
• The user specifies the account to which the funds are to be deposit.
• The user is asked to insert a deposit envelope.
• The deposit slot is closed.
• The machine returns to the main menu.

Withdrawal Transaction

• The user choose the withdrawal transaction from the main menu.
• The user specifies the account from which the amount is to be withdrawn.
• The user specifies the amount to withdraw.
• The machine checks if the account contains sufficient funds.
• The funds are given to the user through the cash dispenser.
• The machine returns to the main menu.

Transfer Transaction

• The user choose the transfer transaction from the main menu.
• The user specifies from which account the funds are to be withdrawn.
• The user specifies to which account the funds are to be deposited.
• The user specifies the amount to transfer.
• The machine checks that the account contains sufficient funds and the transfer is made.
• The machine returns to the main menu.

Balance Inquiry Transaction

• The user choose the balance inquiry transaction from the main menu.
• The user specifies the account whose balance is requested.
• The balance is checked, but not printed on the display.
• The balance is printed on a receipt.
• The machine returns to the main menu.

Unreadable card

• The user inserts the bankcard.
• The card reader try to reads the card.
• The card is returned.
• The user is informed that the card is unreadable.
• The machine becomes idle.

Wrong PIN

• The user inserts the bankcard.
• The card reader reads the card.
• The user is asked to enter PIN.
• The user enters wrong PIN.
• The machine informs the user about the wrong PIN.
• The user is given two new chances to enter correct PIN.
• The user is enters wrong PIN two more times.
• The card reader keeps the card.
• The machine becomes idle.

Pressing Cancel Key

• The user choose a transaction from the main menu.
• The transaction is started.
• The user presses the CANCEL key before the transaction is finished
• The transaction is canceled.
• The card is returned.
• A receipt of all transactions is printed.
• The machine becomes idle.

[ ATM Requirement Specification | Finding classes | Finding responsibilities | Use cases | CRC Cards | Class Diagram | State Transition Diagram | Message Trace Diagram | Object Message Diagram ]