admin:forest-get-database( $config as element(configuration), $forest-id as xs:unsignedLong ) as xs:unsignedLong?
This function returns the ID of the database that uses the specified forest.
http://marklogic.com/xdmp/privileges/admin/forest
http://marklogic.com/xdmp/privileges/admin/forest/{id}
xquery version "1.0-ml"; import module namespace admin = "http://marklogic.com/xdmp/admin" at "/MarkLogic/admin.xqy"; let $config := admin:get-configuration() let $forest := xdmp:forest("Documents") return admin:forest-get-database($config, $forest) (: Returns the ID of the database that uses the Documents forest. :)