Three new roles were created to use them when creating the relations. The first one is for the dotlrn-catalog course and it's called d_catalog_role, the second one is for the dotlrn class and it's called dotlrn-class_role and the last one is for the dotlrn communities and it's called dotlrn_com_role. This roles are the first thing that the package create on installation and their creation code is:

Oracle:

          begin 
          acs_rel_type.create_role('d_catalog_role', 
                                   'DotLRN Course Catalog Role', 
                                   'DotLRN Course Catalog Role');
          acs_rel_type.create_role('dotlrn_class_role', 
                                   'dotLRN Class Role',
                                   'dotLRN Class Role'); 
          acs_rel_type.create_role('dotlrn_com_role',
                                   'dotLRN Community Role', 
                                   'dotLRN Community Role'); 
          commit; end; /
          show errors
          

Postgres:

          create function inline_0 ( ) returns integer as ' 
          begin
          PERFORM acs_rel_type__create_role(''d_catalog_role'', 
                                            ''DotLRN Catalog Role'', 
                                            ''DotLRN Catalog Role''); 
          PERFORM acs_rel_type__create_role(''dotlrn_class_role'', 
                                            ''dotLRN Class Role'', 
                                            ''dotLRN Class Role''); 
          PERFORM acs_rel_type__create_role(''dotlrn_com_role'', 
                                            ''dotLRN Community Role'', 
                                            ''dotLRN Community Role''); 
          return 0; end;' language 'plpgsql'; 
          select inline_0 ( ); drop function inline_0 ( );