UML (Unified Modeling Language) is a standardized modeling language used in object-oriented software engineering. It includes diagrams for class structure, use cases, object interaction sequences, and state machines. Class diagrams describe system classes and relationships, use case diagrams define functionality through actor goals and dependencies, and sequence diagrams show object communication through messages.

1. Ali Kasraei

2. UML
Unified Modeling Language is a standardized
general-purpose modeling language in the field
of object-oriented software engineering. The
standard is managed, and was created by, the
Object Management Group.

3. UML Diagrams
• Class Diagrams
• Use Case Diagrams
• Sequence Diagrams
• UML State Machine

4. Class Diagram
Describes the structure
of a system by
showing the system's
classes, their
attributes, and the
relationships among
the classes.

5. Case Diagram

6. Case Diagram
Window
size: Size
visibility: boolean
display()
hide()
Class Name
Attributes
Operations

8. Relationship types

9. Use Case Diagram
Describes the functionality provided by a system
in terms of actors, their goals represented as use
cases, and any dependencies among those use
cases.

11. Sequence Diagram
Shows how objects communicate with each other
in terms of a sequence of messages. Also indicates
the lifespan of objects relative to those messages.

13. State Machine
Describes the functionality provided by a system
in terms of actors, their goals represented as use
cases, and any dependencies among those use
cases.