If the Postgres postmaster is up and running we can create some databases to experiment with. Here, we describe the basic commands for managing a database.
Let's say you want to create a database named mydb. You can do this with the following command:
% createdb dbname
Postgres allows you to create
any number of databases
at a given site and you automatically become the
database administrator of the database you just created.
Database names must have an alphabetic first
character and are limited to 16 characters in length.
Not every user has authorization to become a database
administrator. If Postgres
refuses to create databases
for you, then the site administrator needs to grant you
permission to create databases. Consult your site
administrator if this occurs.