Free Composite Structure Generator
Create UML composite structure diagrams with our free tool. Internal parts and connectors.
- Part and property notation
- Port symbols
- Internal connectors
- Collaboration roles
- Export as PNG, SVG, or PDF
Frequently Asked Questions
When should I use composite structure diagrams?
Use them when you need to show the internal structure of a class or component—how its parts connect and collaborate. They're more detailed than class diagrams for internal views.
What are parts in composite structure diagrams?
Parts represent instances contained within the classifier. Unlike attributes, parts show structural decomposition with their own types and multiplicities.
How do connectors differ from associations?
Connectors show communication paths between parts within a single context. Associations show relationships between classifiers across the model.