What are the types of diagrams that UML supports?

Answer 1

UML 2.4 has 14 types of diagrams divided into two categories: Structure diagrams and Behavior diagrams.

Structure diagrams show the static structure of the system and it's parts on different abstraction and implementation levels and how they are related to each other.

Structure diagrams are:

• Class diagram
• Object diagram
• Package diagram
• Component diagram
• Composite structure diagram
• Deployment diagram
• Profile diagram

Behavior diagrams show the dynamic behavior of the objects in a system, which can be described as a series of changes to the system over time.

Behavior diagrams are:

• Use case diagram
• Activity diagram
• State machine diagram
• Sequence diagram
• Communication diagram
• Interaction overview diagram
• Timing diagram

Sequence diagram, Communication diagram, Interaction overview diagram, and Timing diagram are Interaction diagrams.

Note, that though Use case diagram is Behavior diagram, it is also special case of Class diagrams (which are Structure diagrams).