Use Case Specification: ATM Query Balance Account
Use case name: ATM Query Balance Account
Actors: Customer, ATM
Preconditions: Customer has an active account with the bank and a valid ATM card
Postconditions: Customer is provided with their account balance
Main flow:
Customer inserts their ATM card into the machine
ATM prompts the customer to enter their PIN
Customer enters their PIN
ATM validates the PIN and retrieves the customer's account information
ATM displays a menu of transaction options, including "Check Account Balance"
Customer selects "Check Account Balance"
ATM requests the account balance from the bank's database
Bank's database provides the account balance to the ATM
ATM displays the customer's account balance on the screen
ATM prompts the customer if they want to perform another transaction
Customer selects "No"
ATM returns the card to the customer