UML (Unified Modeling Language) is a modeling language used to visually represent systems through diagrams. There are several types of UML diagrams used for different purposes, including behavioral diagrams like activity diagrams and sequence diagrams, and structural diagrams like class diagrams. An example use case diagram is provided to show how UML can model an ATM machine system with actors like customers and technicians, and use cases like checking balances and withdrawing cash. Web references are also included for more information on UML diagram types and examples.

1. UML
S.PRAVALLIKA
TECHNICAL TRAINER(GIET)

2. UMLWhat is UML?
 UML is an acronym that stands for Unified Modeling Language. Simply put, UML is a
modern approach to modeling and documenting software. In fact, it’s one of the most
popular business process modeling techniques.
 It is based on diagrammatic representations of software components. By using visual
representations, we are able to better understand possible flaws or errors in software or
business processes.

3. Types of UML Diagrams
 There are several types of UML diagrams and each one of them serves a
different purpose regardless of whether it is being designed before the
implementation or after (as part of documentation).
 The two most broad categories that encompass all other types
are Behavioral UML diagram and Structural UML diagram.

4. UML Diagrams
Behavioral
 Activity Diagram
 Use Case Diagram
 Sequence Diagram
 Collaboration Diagram
Structural
 Class Diagram

6. Use case diagram example
 Bank ATM
 An automated teller machine (ATM) or the automatic banking machine
(ABM) is a banking subsystem (subject) that provides bank customers with
access to financial transactions in a public space without the need for a
cashier, clerk, or bank teller.
 Customer (actor) uses bank ATM to Check Balances of his/her bank
accounts, Deposit Funds, Withdraw Cash and/or Transfer Funds (use
cases). ATM Technician provides Maintenance and Repairs. All these use
cases also involve Bank actor whether it is related to customer transactions
or to the ATM servicing.

7. Usecasediagram

9. Activitydiagram

11. Sequencediagram

13. Collaborationdiagram

15. Classdiagram

16. WEB REFERENCES
 https://tallyfy.com/uml-diagram/
 https://www.edrawsoft.com/uml-diagram-symbols.html
 https://www.startertutorials.com/uml/uml-diagrams-atm-application.html