Practical no 6
Practical no 6
Aim - Prepare use case and draw the case diagram.
A use case diagram is a graphical depiction of a user's possible interactions with a system. A use case diagram shows various use cases and different types of users the system has and will often be accompanied by other types of diagrams as well. The use cases are represented by either circles or ellipses.While a use case itself might drill into a lot of detail about every possibility, a use-case diagram can help provide a higher-level view of the system. It has been said before that "Use case diagrams are the blueprints for your system".
Here we will understand about designing the use case diagram for the ATM system. Some scenarios of the system are as follows.
Step-1:
The customer 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.
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.
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.
Result - Hence, we have learned about case diagram.