# Architecture Overview
Welcome to the Wikidata & Wikibase architecture documentation.
The canonical place to read these docs is on Github Pages (opens new window).
Here you will find a high level overview of Wikibase, its surrounding systems, and some details relating to specific cases and deployments such as Wikidata.
Systems are documented using arc42 structured (opens new window) templates.
You can read more about this method at docs.arc42.org (opens new window).
# Wikibase Systems
Wikibase has expanded far beyond the initial MediaWiki extension that was created called Wikibase.
Multiple other MediaWiki extensions, and other surrounding systems now make up part of the Wikibase system landscape.
To simplify things the whole system is represented as Repository, Query Service and Client.
# Other components
You may be familiar with other components, and should be able to easily navigate to their location using the table below.
| Component | Parent System |
|---|---|
| Termbox & Termbox SSR | Repository |
| EntitySchema | Repository |
| Property Suggester | Repository |
| QualityConstraints | Repository |
| WikibaseLexeme | Repository |
| WikibaseMediaInfo | Repository |
| DataBridge | Client |
| Article Placeholder | Client |
| Query UI | Query Service |
| Query Builder | Query Service |
| Quickstatements | External tools |
# Contributing
If you would like to contribute to these docs then please read the dedicated contributing guide.