How to Install PostgreSQL on Fedora Gnu/Linux Distro
GNU/Linux Fedora Installing PostgreSQL DB Guide
How to Install PostgreSQL Database in Fedora GNU/Linux desktops.
And to Install PostgreSQL for Fedora you have first to setup the dnf Repository.

$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }
How to Install PostgreSQL Database in Fedora GNU/Linux desktops.
And to Install PostgreSQL for Fedora you have first to setup the dnf Repository.