ATM usecases

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Use case Template andUse case Template and

ATM ExampleATM Example


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Use case TemplateUse case Template

USE CASE Name: the name is the goal asa short active verb phrasePre Condition: what we expect is already

the state of the worldSuccess End Condition/Post Condition:

the state of the world upon successfulcompletion


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Primary Actor: a role name ordescription for the primary actorSecondary Actor: other systems relied

upon to accomplish use caseTrigger: the action upon the system that

starts the use case


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Description1. put here the steps of the scenario from

trigger to goal delivery, and any cleanupafter>2

3


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EXTENSIONS: Branching Action 1a : 2a.


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ATM

Withdraw

Deposit

Inquiry

verification

transfer

BankCustomer

generateministatement

BANK


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WithdrawWithdraw

A withdrawal transaction asks the customer to choose atype of account to withdraw from (e.g. checking) menu ofpossible accounts, and to choose amount from a menu of

possible amounts. The system verifies that it hassufficient money on hand to satisfy the request beforesending the transaction to the bank. (If not, the customeris informed and asked to enter a different amount.) If thetransaction is approved by the bank, the appropriateamount of cash is dispensed by the machine before itissues a receipt. (The dispensing of cash is also recordedin the ATM's log.)

A withdrawal transaction can be cancelled by thecustomer pressing the Cancel key any time prior tochoosing the amount.


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Primary Actor: Customer Secondry Actor: Bank Trigger: Customer has selected withdraw

cash option from a menu of options. Pre Condition: Customer ATM card has been

verified and withdraw option is selected. Post Condition: Customer gets the desired amount from

machine

Customer gets a receipt. System updates bank about transaction. Customers ATM card is returned.


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Normal Flow: 1. User has selected withdraw option. 2. System asks user to enter required amount.

3. The system verifies that amount is multiple of 500 anddoes not exceed the limit/20000. 4.The system verifies that it has sufficient money on hand

to satisfy the request before sending the transaction to thebank.

5. System sends a request to the bank.

6. On approval from the bank, the said amount isdispensed from the machine. 7. A log is maintained in machine. 8. card is ejected from the system and System informs

user to pick card. 9. Cash is ejected and System informs user to pick cash.

10. System asks user if he needs a receipt 11. If user selects yes System generates a receipt of thetransaction.


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Alternative Flows:3.a. if amount is not a multiple of 500 or

exceeds the limit of 20000 1. An error message is shown to user. 2. customer is asked to re enter amount.

4.a. There is not sufficient amount inmachine. 1. System informs user that this amount can not be

dispensed. 2. System returns to main menu.

6.a. if bank does not approve request, error

is shown to user10.a. if user selects no, receipt is notgenerated.


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ReferenceReference

http://www.math-cs.gordon.edu/courses/cpshttp://download.cnet.com/ATM-Automated-TCockburns USE CASE Template
http://www.math-cs.gordon.edu/courses/cps211/ATMExample/UseCases.htmlhttp://download.cnet.com/ATM-Automated-Teller-Machine/3004-20415_4-11108305.htmlhttp://download.cnet.com/ATM-Automated-Teller-Machine/3004-20415_4-11108305.htmlhttp://www.math-cs.gordon.edu/courses/cps211/ATMExample/UseCases.html

ATM usecases

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