Structural diagrams depict the structural elements composing a system or function. These diagrams reflect the static relationships of a structure, such as Class or Package diagrams, or run-time architectures such as Object or Composite Structure diagrams.
Structural diagrams include the following diagram types:
Class diagrams capture the logical structure of the system, the Classes and objects that make up the model, describing what exists and what attributes and behavior it has.
Composite Structure Diagrams
Composite Structure diagrams reflect the internal collaboration of Classes, Interfaces and Components (and their properties) to describe a functionality.
Component diagrams illustrate the pieces of software, embedded controllers and such that make up a system, and their organization and dependencies.
Deployment diagrams show how and where the system is to be deployed; that is, its execution architecture.
Object diagrams depict object instances of Classes and their relationships at a point in time.
Package diagrams depict the organization of model elements into packages and the dependencies amongst them.
Profile Diagrams are those created in a <<profile>> package, to extend UML elements, connectors and components.