Component diagram examples.
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What a component diagram is.
A component diagram shows the major parts of a software system and the dependencies between them. It gives each part a clear responsibility, such as request handling, business logic, persistence, rendering or an external-provider integration.
Use it after you know the system boundary but before you need class-level detail. A good component diagram makes it clear which component owns a concern and which interfaces it uses to work with the others.
- Standard
- Ogata / standard controls textbook convention
- Engine
- schematex-blockdiagram
- Editable
- Double-click text, drag nodes
- Export
- SVG · PNG · PDF
Who uses component diagrams.
Component responsibilities and dependency boundaries for an architecture review.
Checkout, reporting and notification workflows divided into implementable parts.
A compact map of the services and adapters they need to understand before changing the system.
How to make a component diagram in three steps.
Describe it
One paragraph is enough to start.
See the drawing
Drawn by the right engine.
Say what changes
Every edit keeps a version.
Common questions
What is a component diagram?
A component diagram shows the structural relationships between the major components of a software system, including interfaces, dependencies and collaborations.
When should I use a component diagram?
Use one during architecture planning, system documentation or when a team needs to agree on responsibilities inside a software system or service.
What elements belong in a component diagram?
Include components with meaningful responsibilities, their provided or required interfaces, data stores and important external services. Avoid minor helpers that obscure the main structure.
How do I show relationships between components?
Draw a directed connection from the component that depends on an interface to the component or external service that provides it. Label the connection when the dependency is not obvious.
Other drawings for the same work.
Draw your component diagram now.
Free account, no card. Describe the components and the dependencies between them.
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