ALTER DEFAULT PRIVILEGES FOR ROLE

After a database was updated by the application, a schema dump showed the following default privilege statements:

--
-- Name: DEFAULT PRIVILEGES FOR SEQUENCES; Type: DEFAULT ACL; Schema: public; Owner: gitlab_dbo
--

ALTER DEFAULT PRIVILEGES FOR ROLE <dbowner> IN SCHEMA public REVOKE ALL ON SEQUENCES FROM <dbowner>;
ALTER DEFAULT PRIVILEGES FOR ROLE <dbowner> IN SCHEMA public GRANT SELECT,USAGE ON SEQUENCES TO <appuser>;

--
-- Name: DEFAULT PRIVILEGES FOR TABLES; Type: DEFAULT ACL; Schema: public; Owner: <dbowner>
--

ALTER DEFAULT PRIVILEGES FOR ROLE <dbowner> IN SCHEMA public REVOKE ALL ON TABLES FROM <dbowner>;
ALTER DEFAULT PRIVILEGES FOR ROLE <dbowner> IN SCHEMA public GRANT SELECT,INSERT,DELETE,UPDATE ON TABLES TO <appuser>;

Why would you want to revoke all privileges from the dbowner?
It actually had granted the privileges to PUBLIC, but I revoked those privileges & changed it to the app account.

What is the difference between these statements?:
ALTER DEFAULT PRIVILEGES FOR ROLE <dbowner> IN SCHEMA public GRANT ... TO <appuser>;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ... TO <appuser>;

Karin Hilbert
Database Specialist
Administrative Information Services
Pennsylvania State University
25 Shields Bldg., University Park, PA 16802
Work - 814-863-3633
Email - ioh1(at)psu(dot)edu
IM - ioh1(at)chat(dot)psu(dot)edu