# Composite Structure Diagram

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Published 2022-12-03

This tutorial explains to you what a UML Composite Structure Diagram is. Here are the concepts explanation and an example.

Composite Structure Diagram is one of the new artifacts added to UML 2.0. It shows the internal structure (including parts and connectors) of a structured classifier or collaboration.

Here is an example of Composite Structure Diagram in UML describing the parts of a collaboration:

In this example the Wheels and the Engine are the Parts of the Collaboration and the FrontAxle and the RearAxle are the Connectors.

The Car is the Structure. The Car is the Composite Structure.

The Composite Structure Diagram in UML shows the parts and the connections between the parts.