PostgreSQL Setup
Reference URL: https://linuxize.com/post/how-to-install-postgresql-on-debian-10/
$ sudo -u postgres psql
to get into postgress client.=# CREATE USER sonardbuser;
=# ALTER USER omsuser WITH PASSWORD 'new_password';
=# CREATE DATABASE sonardb WITH TEMPLATE = template0 ENCODING 'UTF8';
=# exit;
From client connect with
$ psql -h <hostname> -d <db instance name> -U <username>
. It will then prompt you for the password.