mariadb-server - 1:10.3.34-0+deb10u1 main

This is an empty package that depends on the current "best" version of
mariadb-server (currently mariadb-server-10.3), as determined by the MariaDB
maintainers. Install this package if in doubt about which MariaDB
version you need. That will install the version recommended by the
package maintainers.
.
MariaDB is a fast, stable and true multi-user, multi-threaded SQL database
server. SQL (Structured Query Language) is the most popular database query
language in the world. The main goals of MariaDB are speed, robustness and
ease of use.