Context and Scope

Business Context

Neighbour	Description
Wikibase Repo	A Wikibase Repository that the Client connects to

Technical Context

Wikibase Client is implemented as a collection of MediaWiki extensions. These are "plugins" (= extensions) that live inside MediaWiki and add functionality to it, which is reflected in this context diagram by embedding the Wikibase Client subsystem into a higher-level MediaWiki application. See further details on this decision in the Solution Strategy section.

Component	Description
Lua/Parser function	Lua bindings or parser functions invoked through Wikitext to embed Entity data in Wiki articles
ChangeHandler	Receives notifications to update and purge pages when an Item is changed on the Repo
UpdateRepoHookHandler	Notifies the Wikibase Repository to update the connected Item when a page is moved or deleted
Data Bridge	A frontend component enabling Repository edits on the Client via the Repository API
Special Pages	User interfaces for viewing Entity meta data. For a full description see the term Special Pages in the Glossary
APIs	WikibaseClient's actions on the MW Action API (opens new window) exposing Entity (meta) data
Usage Tracking	Tracks which Repository Entities are referenced on which wiki pages, and how.