There is a page named "Nextcloud" on this wiki. See also the other search results found.
File:Wizard postgresql.png For Nextcloud wiki(1,138 × 1,161 (528 KB)) - 21:14, 12 January 2021File:Wizard mariadb.png For Nextcloud wiki(1,267 × 1,187 (522 KB)) - 06:53, 15 January 2021