Database reports query MediaWiki in search of patterns. Their output helps users by providing them with utility reports, used by community members to improve the encyclopedia (e.g., Untagged stubs (configuration)) and statistical reports, which have past and present informational value (e.g., Page count by namespace (configuration)).
Many reports such as these can now be generated with the Quarry service.
Reports which are no longer updated can be found in the archive page or archive category. All subpages of this page (including database report pages, as well as configuration files, exclude lists, etc) can be found at the PrefixIndex for it.
Please discuss the current reports or suggest a new report on the talk page.