$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install MariaDB on Red Hat Enterprise Gnu/Linux Distro

MariaDB RHEL Installation Guide

How to Install MariaDB Database Server on Red Hat Enterprise GNU/Linux Distribution.

And MariaDB for RHEL is One of the most Popular Database Servers in the World that’s Made by the Original Developers of MySQL and Guaranteed to stay Open Source.

MariaDB RHEL Installation Guide - Featured

RHEL MariaDB Installation Guides