===== Postgresql =====
CREATE database mydb;\\
CREATE user myuser with encrypted password 'mypass';\\
GRANT ALL PRIVILEGES ON DATABASE mydb TO myuser;\\
ALTER ROLE myuser WITH LOGIN;##\\

===== Mysql =====
CREATE USER 'user'@'%' IDENTIFIED WITH mysql_native_password BY 'password';\\
CREATE DATABASE mydb;\\
grant all privileges ON mydb.* TO 'myuser'@'%';