Question

Consider an automatic bank machine, known as Automatic Teller Machine (ATM), and a customer who wishes to withdraw some cash from his or her banking account. Draw a UML system sequence diagram to represent this use case.

Answer 1

UML DIAGRAMS

It is abbreviated as Unified Modeling language Diagram. This is the representation of a system along with the characters as the actors, different roles, they perform different action and described in the different class for better understanding of the program. We can represent a single system in UML based diagrams. The UML representation is divided into two types. They are following:

STRUCTURAL DIAGRAM

It is the static aspect of UML diagram. These structural diagrams are classified into four parts. These are following :

BEHAVIOURAL DIAGRAM

It is the considered as the both static and dynamic part of UML diagram. Here is a type of reprsentation is taking place. These are classified into five diagram aspect. These are following :

ATM UML DIAGRAM:

ATM is an automatic teller machine which provides us money using a card. It is mainly used for easy transaction to withdraw the cash. In ATM we deposit as well as withdraw the cash. The ATM working is mainly automatic based model.

WORKING (STEP – BY – STEP EXECUTION)

• When a customer inserts the ATM card to an ATM machine.
• Then it will be asking the user to enter the pin of the corresponding ATM card.
• Then the used will entering the pin of that ATM card.
• Then from the bank server it will be checking whether entered PIN number is correct or not.
• Once the entered PIN is Ok.
• The it will be providing some options like withdraw cash, describe mini statement, or print statement.
• Then the user has selected his option. For the time being let’s take the withdraw of cash option.
• Once the option is sent to the ATM then the ATM will be asking the user to enter the amount.
• After this in the background the transaction process will be taking place.
• Once the amount is entered by the user the atm will be asking for the confirm message like press OK button.
• Once after this the cash has been generated by the machine and request to take the cash to shown on that screen for customers.
• After ATM machine will be asking whether to continue the process or not.
• If not, it will be terminating from that session.
• For needed customers they can print the receipt.

This how the working takes place based on the UML sequence diagram. The diagram is shown below.