could not change directory to "/home/carla"

Shall the new role be a superuser? (y/n) y

These PostgreSQL roles, postgres and carla, are PostgreSQL user accounts that are independent of system accounts. A role can be a single user or a group of users. Roles can own database objects, such as tables, and can assign privileges to access those tables to other roles. Use the dropuser command to delete a role:

$

Now, let's create a brand-new database: