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UML Structural Models

UML Structural diagrams depict the structural elements composing a system or function. These diagrams reflect the static relationships of a structure (Class or Package diagrams) or run-time architecture (Object or Composite Structure diagrams).

Structural Diagram types

Diagram Type


See also


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.


Class diagrams

Composite Structure

Composite Structure diagrams reflect the internal collaboration of Classes, Interfaces and Components (and their properties) to describe a functionality.


Composite Structure diagrams


Component diagrams illustrate the pieces of software, embedded controllers and such that make up a system, and their organization and dependencies.


Component diagrams


Deployment diagrams show how and where the system is to be deployed; that is, its execution architecture.


Deployment diagrams


Object diagrams depict object instances of Classes and their relationships at a point in time.


Object diagrams


Package diagrams depict the organization of model elements into Packages and the dependencies amongst them.


Package diagrams


Profile Diagrams are those created in a «profile» Package, to extend UML elements, connectors and components.


Profile Diagrams