Automated Teller Machine (ATM) also known as ABM (Automated Banking Machine) is a banking system. This banking system allows customers or users to have access to financial transactions. These transactions can be done in public space without any need for a clerk, cashier, or bank teller. Working and description of the ATM can be explained with the help of the Use Case Diagram.
We will understand about designing the use case diagram for the ATM system. Some scenarios of the system are as follows.
- Step-1:
The user is authenticated when enters the plastic ATM card in a Bank ATM. Then enters the user name and PIN (Personal Identification Number). For every ATM transaction, a Customer Authentication use case is required and essential. So, it is shown as include relationship.
Example of use case diagram for Customer Authentication is shown below:
- Step-2:
User checks the bank balance as well as also demands the mini statement about the bank balance if they want. Then the user withdraws the money as per their need. If they want to deposit some money, they can do it. After complete action, the user closes the session.
Example of the use case diagram for Bank ATM system is shown below:
- Step-3:
If there is any error or repair needed in Bank ATM, it is done by an ATM technician. ATM technician is responsible for the maintenance of the Bank ATM, upgrades for hardware, firmware or software, and on-site diagnosis.
Example of use case diagram for working of ATM technician is shown below:
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