Manual:Categories

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Categories in MediaWiki are used to group similar pages, and groups of similar groups, together to form one or more tree-like hierarchies.

Database[edit]

MediaWiki keeps category data in the category and categorylinks tables.

API[edit]

Several API modules provide access to category information: API:Categories, API:Categoryinfo, API:Allcategories, and API:Categorymembers.

User interface[edit]

A number of category extensions are available; one of the more popular ones, CategoryTree, provides a dynamic view of the wiki's category structure as a tree.

See also[edit]