UML Short Description

Below is a mapping between program elements in C# and their corresponding UML diagram elements, along with the meaning of each.

UML Elements Table

Program element	Diagram element	Meaning
Class		Type and parameters specified when important; access indicated by + (public), – (private), # (protected).
Interface		Name starts with I. Also used for abstract classes.
Note		Any descriptive text.
Package		Grouping of classes and interfaces.
Inheritance		B inherits from A.
Realization		B implements A.
Association		A and B call and access each other’s elements.
Association (one way)		A can call and access B‘s elements, but not vice versa.
Aggregation		A has a B, and B can outlive A.
Composition		A has a B and B depends on A.