Roles
PostgreSQL implements part of its access control using roles.
Permissions
In pgModeler, permissions generate the GRANT and REVOKE commands for the associated objects.
Policies
Policies are objects that handle the row-level security (RLS) system introduced by PostgreSQL 9.5.
Tablespaces
Tablespaces are used to allocate in the filesystem an alternative location where the data files containing database objects (like tables and indexes) can reside.