Manual:$wgLocalDatabases

Database settings: $wgLocalDatabases
Other wikis on this site, can be administered from a single developer account.
Introduced in version:	1.3.0
Removed in version:	still in use
Allowed values:	(array of strings - see below)
Default value:	array()

Other settings: Alphabetical | By Function

Details

MediaWiki version:

1.6

and newer

User rights on other wikis on this site can be administered from a single developer account (permission: userrights-interwiki). E.g.,

$wgLocalDatabases = array( 'wikipedia', 'meta', 'news' );

Earlier versions

MediaWiki version:

≤ 1.5

Prior to 1.6.0 the array was indexed by interwiki prefix:

$wgLocalDatabases = array(
//   (interwiki prefix) => (database name),
     'WikiPedia' => 'wikipedia',
     'Meta' => 'meta',
     'WikiNews' => 'news'
);

(Note: That is just an example, and does not reflect any real configuration)