`createdb` - create a new PostgreSQL database

createdb [OPTION]... [DBNAME] [DESCRIPTION]

Options you will use

-O, --owner=OWNER: database user to own the new database.
-T, --template=TEMPLATE: template database to copy.
-E, --encoding=ENCODING: encoding for the database.
-h, --host=HOSTNAME: database server host or socket directory (default: the Unix socket in /var/run/postgresql). A value starting with / is a socket directory; anything else is TCP.
-p, --port=PORT: database server port (default 5432).
-U, --username=USERNAME: database user name (default: your OS user name).
-w, --no-password: never prompt for a password (fail instead: what scripts want).
-W, --password: force a password prompt (normally automatic).

$ sudo -u postgres createdb -O orders_owner orders

a database owned by its owner role

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