postgres=# \d pg_class
      Table "pg_catalog.pg_class"
     Column     |   Type    | Modifiers
----------------+-----------+-----------
 relname        | name      | not null
 relnamespace   | oid       | not null
 reltype        | oid       | not null
 reloftype      | oid       | not null
 relowner       | oid       | not null
 relam          | oid       | not null
 relfilenode    | oid       | not null
 reltablespace  | oid       | not null
 relpages       | integer   | not null
 reltuples      | real      | not null
 relallvisible  | integer   | not null
 reltoastrelid  | oid       | not null
 relhasindex    | boolean   | not null
 relisshared    | boolean   | not null
 relpersistence | "char"    | not null
 relkind        | "char"    | not null
 relnatts       | smallint  | not null
 relchecks      | smallint  | not null
 relhasoids     | boolean   | not null
 relhaspkey     | boolean   | not null
 relhasrules    | boolean   | not null
postgres=# select relname,reltype,relowner,relfilenode from pg_class;
                 relname                 | reltype | relowner | relfilenode
-----------------------------------------+---------+----------+-------------
 pg_statistic                            |   10912 |       10 |       12735
 pg_type                                 |      71 |       10 |           0
 pg_toast_2619                           |   11146 |       10 |       12737
 pg_toast_2619_index                     |       0 |       10 |       12739
 pg_authid_rolname_index                 |       0 |       10 |           0
 pg_authid_oid_index                     |       0 |       10 |           0
 pg_attribute_relid_attnam_index         |       0 |       10 |           0
 pg_attribute_relid_attnum_index         |       0 |       10 |           0
 pg_toast_1255                           |   11143 |       10 |           0
 pg_toast_1255_index                     |       0 |       10 |           0
 pg_toast_2604                           |   11140 |       10 |       12771
 pg_toast_2604_index                     |       0 |       10 |       12773
 pg_attrdef_adrelid_adnum_index          |       0 |       10 |       12774
 pg_toast_2606                           |   11141 |       10 |       12778
 pg_toast_2606_index                     |       0 |       10 |       12780
 pg_constraint_conname_nsp_index         |       0 |       10 |       12781
 pg_am_name_index                        |       0 |       10 |       12807
 pg_am_oid_index                         |       0 |       10 |       12808
 pg_amop_fam_strat_index                 |       0 |       10 |       12811
 pg_amop_opr_fam_index                   |       0 |       10 |       12812
 pg_amop_oid_index                       |       0 |       10 |       12813
 pg_amproc_fam_proc_index                |       0 |       10 |       12816
 pg_amproc_oid_index                     |       0 |       10 |       12817
 pg_aggregate_fnoid_index                |       0 |       10 |       12827
 pg_toast_2618                           |   11144 |       10 |       12830
 pg_toast_2618_index                     |       0 |       10 |       12832
 pg_toast_2620                           |   11147 |       10 |       12837
 pg_toast_2620_index                     |       0 |       10 |       12839
 pg_toast_2609                           |   11142 |       10 |       12849
 pg_toast_2609_index                     |       0 |       10 |       12851
 pg_cast_oid_index                       |       0 |       10 |       12855
 pg_cast_source_target_index             |       0 |       10 |       12856
 pg_toast_2964                           |   11149 |       10 |           0
 pg_toast_2964_index                     |       0 |       10 |           0
 pg_auth_members_role_member_index       |       0 |       10 |           0
 pg_auth_members_member_role_index       |       0 |       10 |           0
 pg_toast_2396                           |   11148 |       10 |           0
 pg_toast_2396_index                     |       0 |       10 |           0
 pg_toast_3596                           |   11145 |       10 |       12946
 pg_toast_3596_index                     |       0 |       10 |       12948
 pg_collation_oid_index                  |       0 |       10 |       12955
 pg_collation_name_enc_nsp_index         |       0 |       10 |       12956
 pg_database_datname_index               |       0 |       10 |           0
 pg_database_oid_index                   |       0 |       10 |           0
 pg_proc_oid_index                       |       0 |       10 |           0
 pg_inherits_parent_index                |       0 |       10 |       12787
 pg_inherits_relid_seqno_index           |       0 |       10 |       12788
 pg_index_indrelid_index                 |       0 |       10 |       12791
 pg_index_indexrelid_index               |       0 |       10 |       12792
 pg_operator_oid_index                   |       0 |       10 |       12795
 pg_operator_oprname_l_r_n_index         |       0 |       10 |       12796
 pg_opfamily_am_name_nsp_index           |       0 |       10 |       12799
 pg_opfamily_oid_index                   |       0 |       10 |       12800
 pg_opclass_am_name_nsp_index            |       0 |       10 |       12803
 pg_opclass_oid_index                    |       0 |       10 |       12804
 pg_language_name_index                  |       0 |       10 |       12820
 pg_language_oid_index                   |       0 |       10 |       12821
 pg_largeobject_metadata_oid_index       |       0 |       10 |       12824
 pg_rewrite_oid_index                    |       0 |       10 |       12833
 pg_rewrite_rel_rulename_index           |       0 |       10 |       12834
 pg_trigger_tgconstraint_index           |       0 |       10 |       12840
 pg_trigger_tgrelid_tgname_index         |       0 |       10 |       12841
 pg_event_trigger_evtname_index          |       0 |       10 |       12845
 pg_event_trigger_oid_index              |       0 |       10 |       12846
 pg_description_o_c_o_index              |       0 |       10 |       12852
 pg_enum_oid_index                       |       0 |       10 |       12859
 pg_enum_typid_label_index               |       0 |       10 |       12860
 pg_namespace_nspname_index              |       0 |       10 |       12864
 pg_namespace_oid_index                  |       0 |       10 |       12865
 pg_conversion_default_index             |       0 |       10 |       12868
 pg_conversion_name_nsp_index            |       0 |       10 |       12869
 pg_conversion_oid_index                 |       0 |       10 |       12870
 pg_depend_depender_index                |       0 |       10 |       12873
 pg_depend_reference_index               |       0 |       10 |       12874
 pg_tablespace_oid_index                 |       0 |       10 |           0
 pg_tablespace_spcname_index             |       0 |       10 |           0
 pg_pltemplate_name_index                |       0 |       10 |           0
 pg_shdepend_depender_index              |       0 |       10 |           0
 pg_shdepend_reference_index             |       0 |       10 |           0
 pg_shdescription_o_c_index              |       0 |       10 |           0
 pg_ts_config_cfgname_index              |       0 |       10 |       12908
 pg_ts_config_oid_index                  |       0 |       10 |       12909
 pg_ts_config_map_index                  |       0 |       10 |       12912
 pg_ts_dict_dictname_index               |       0 |       10 |       12915
 pg_largeobject_loid_pn_index            |       0 |       10 |       12962
 pg_type_oid_index                       |       0 |       10 |           0
 pg_roles                                |   11151 |       10 |       11150
 pg_shadow                               |   11155 |       10 |       11154
 pg_type_typname_nsp_index               |       0 |       10 |           0
 pg_authid                               |    2842 |       10 |           0
 pg_user_mapping_oid_index               |       0 |       10 |       12751
 pg_user_mapping_user_server_index       |       0 |       10 |       12752
 pg_group                                |   11158 |       10 |       11157
 pg_user                                 |   11161 |       10 |       11160
 pg_rules                                |   11164 |       10 |       11163
 pg_views                                |   11168 |       10 |       11167
 pg_tables                               |   11172 |       10 |       11171
 pg_matviews                             |   11176 |       10 |       11175
 pg_indexes                              |   11180 |       10 |       11179
 pg_stats                                |   11184 |       10 |       11183
 pg_settings                             |   11211 |       10 |       11210
 pg_locks                                |   11188 |       10 |       11187
 pg_cursors                              |   11191 |       10 |       11190
 pg_available_extensions                 |   11194 |       10 |       11193
 pg_available_extension_versions         |   11197 |       10 |       11196
 pg_prepared_xacts                       |   11200 |       10 |       11199
 pg_prepared_statements                  |   11204 |       10 |       11203
 pg_seclabels                            |   11207 |       10 |       11206
 pg_timezone_abbrevs                     |   11216 |       10 |       11215
 pg_timezone_names                       |   11219 |       10 |       11218
 pg_ts_dict_oid_index                    |       0 |       10 |       12916
 pg_ts_parser_prsname_index              |       0 |       10 |       12919
 pg_ts_template_tmplname_index           |       0 |       10 |       12923
 pg_ts_template_oid_index                |       0 |       10 |       12924
 pg_extension_oid_index                  |       0 |       10 |       12927
 pg_extension_name_index                 |       0 |       10 |       12928
 pg_foreign_data_wrapper_oid_index       |       0 |       10 |       12931
 pg_foreign_data_wrapper_name_index      |       0 |       10 |       12932
 pg_foreign_server_oid_index             |       0 |       10 |       12935
 pg_foreign_server_name_index            |       0 |       10 |       12936
 pg_foreign_table_relid_index            |       0 |       10 |       12939
 pg_default_acl_role_nsp_obj_index       |       0 |       10 |       12942
 pg_default_acl_oid_index                |       0 |       10 |       12943
 pg_seclabel_object_index                |       0 |       10 |       12949
 pg_shseclabel_object_index              |       0 |       10 |           0
 pg_range_rngtypid_index                 |       0 |       10 |       12959
 pg_stat_all_tables                      |   11222 |       10 |       11221
 pg_stat_xact_all_tables                 |   11226 |       10 |       11225
 pg_stat_sys_tables                      |   11230 |       10 |       11229
 pg_stat_xact_sys_tables                 |   11234 |       10 |       11233
 pg_stat_user_tables                     |   11237 |       10 |       11236
 pg_stat_xact_user_tables                |   11241 |       10 |       11240
 pg_statio_all_tables                    |   11244 |       10 |       11243
 pg_statio_sys_tables                    |   11248 |       10 |       11247
 pg_statio_user_tables                   |   11251 |       10 |       11250
 pg_attribute                            |      75 |       10 |           0
 pg_proc                                 |      81 |       10 |           0
 pg_statio_all_indexes                   |   11264 |       10 |       11263
 pg_statio_sys_indexes                   |   11268 |       10 |       11267
 pg_statio_user_indexes                  |   11271 |       10 |       11270
 pg_statio_all_sequences                 |   11274 |       10 |       11273
 pg_statio_sys_sequences                 |   11278 |       10 |       11277
 pg_statio_user_sequences                |   11281 |       10 |       11280
 pg_stat_activity                        |   11284 |       10 |       11283
 pg_stat_replication                     |   11288 |       10 |       11287
 pg_replication_slots                    |   11292 |       10 |       11291
 pg_stat_database                        |   11295 |       10 |       11294
 pg_stat_database_conflicts              |   11298 |       10 |       11297
 pg_stat_user_functions                  |   11301 |       10 |       11300
 pg_stat_xact_user_functions             |   11305 |       10 |       11304
 pg_stat_archiver                        |   11309 |       10 |       11308
 pg_stat_bgwriter                        |   11312 |       10 |       11311
 pg_user_mappings                        |   11315 |       10 |       11314
 pg_user_mapping                         |   11133 |       10 |       12749
 pg_attrdef                              |   10000 |       10 |       12769
 pg_constraint                           |   10001 |       10 |       12776
 pg_index                                |   10003 |       10 |       12789
 pg_operator                             |   10004 |       10 |       12793
 pg_opfamily                             |   10005 |       10 |       12797
 pg_opclass                              |   10006 |       10 |       12801
 pg_am                                   |   10125 |       10 |       12805
 pg_amop                                 |   10126 |       10 |       12809
 pg_amproc                               |   10563 |       10 |       12814
 pg_language                             |   10908 |       10 |       12818
 pg_database                             |    1248 |       10 |           0
 pg_stat_all_indexes                     |   11254 |       10 |       11253
 pg_stat_sys_indexes                     |   11258 |       10 |       11257
 pg_stat_user_indexes                    |   11261 |       10 |       11260
 information_schema_catalog_name         |   12471 |       10 |       12470
 applicable_roles                        |   12477 |       10 |       12476
 administrable_role_authorizations       |   12481 |       10 |       12480
 pg_aggregate                            |   10911 |       10 |       12825
 pg_rewrite                              |   10913 |       10 |       12828
 pg_trigger                              |   10914 |       10 |       12835
 pg_event_trigger                        |   10915 |       10 |       12843
 pg_description                          |   10916 |       10 |       12847
 pg_cast                                 |   10917 |       10 |       12853
 pg_enum                                 |   11116 |       10 |       12857
 pg_namespace                            |   11117 |       10 |       12862
 pg_conversion                           |   11118 |       10 |       12866
 pg_depend                               |   11119 |       10 |       12871
 pg_db_role_setting                      |   11120 |       10 |           0
 pg_tablespace                           |   11121 |       10 |           0
 pg_pltemplate                           |   11122 |       10 |           0
 pg_auth_members                         |    2843 |       10 |           0
 pg_shdepend                             |   11123 |       10 |           0
 pg_shdescription                        |   11124 |       10 |           0
 pg_ts_config                            |   11125 |       10 |       12906
 pg_ts_config_map                        |   11126 |       10 |       12910
 pg_ts_dict                              |   11127 |       10 |       12913
 pg_ts_parser                            |   11128 |       10 |       12917
 pg_ts_template                          |   11129 |       10 |       12921
 pg_extension                            |   11130 |       10 |       12925
 pg_foreign_data_wrapper                 |   11131 |       10 |       12929
 pg_foreign_server                       |   11132 |       10 |       12933
 pg_foreign_table                        |   11134 |       10 |       12937
 pg_default_acl                          |   11135 |       10 |       12940
 pg_seclabel                             |   11136 |       10 |       12944
 pg_shseclabel                           |   11137 |       10 |           0
 pg_collation                            |   11138 |       10 |       12953
 pg_range                                |   11139 |       10 |       12957
 pg_largeobject                          |   10910 |       10 |       12960
 attributes                              |   12484 |       10 |       12483
 character_sets                          |   12488 |       10 |       12487
 check_constraint_routine_usage          |   12492 |       10 |       12491
 check_constraints                       |   12496 |       10 |       12495
 collations                              |   12500 |       10 |       12499
 collation_character_set_applicability   |   12503 |       10 |       12502
 column_domain_usage                     |   12506 |       10 |       12505
 column_privileges                       |   12510 |       10 |       12509
 column_udt_usage                        |   12514 |       10 |       12513
 columns                                 |   12518 |       10 |       12517
 constraint_column_usage                 |   12522 |       10 |       12521
 constraint_table_usage                  |   12526 |       10 |       12525
 domain_constraints                      |   12530 |       10 |       12529
 domain_udt_usage                        |   12534 |       10 |       12533
 domains                                 |   12537 |       10 |       12536
 enabled_roles                           |   12541 |       10 |       12540
 key_column_usage                        |   12544 |       10 |       12543
 parameters                              |   12548 |       10 |       12547
 referential_constraints                 |   12552 |       10 |       12551
 role_column_grants                      |   12556 |       10 |       12555
 routine_privileges                      |   12559 |       10 |       12558
 role_routine_grants                     |   12563 |       10 |       12562
 routines                                |   12566 |       10 |       12565
 schemata                                |   12570 |       10 |       12569
 sequences                               |   12573 |       10 |       12572
 sql_implementation_info                 |   12582 |       10 |       12968
 pg_toast_12581                          |   12584 |       10 |       12970
 pg_toast_12581_index                    |       0 |       10 |       12972
 sql_languages                           |   12587 |       10 |       12973
 pg_toast_12586                          |   12589 |       10 |       12975
 pg_toast_12586_index                    |       0 |       10 |       12977
 sql_packages                            |   12592 |       10 |       12978
 pg_toast_12591                          |   12594 |       10 |       12980
 pg_toast_12591_index                    |       0 |       10 |       12982
 pg_toast_12596                          |   12599 |       10 |       12985
 pg_toast_12596_index                    |       0 |       10 |       12987
 table_constraints                       |   12612 |       10 |       12611
 table_privileges                        |   12616 |       10 |       12615
 role_table_grants                       |   12620 |       10 |       12619
 tables                                  |   12623 |       10 |       12622
 triggered_update_columns                |   12627 |       10 |       12626
 triggers                                |   12631 |       10 |       12630
 udt_privileges                          |   12635 |       10 |       12634
 role_udt_grants                         |   12639 |       10 |       12638
 usage_privileges                        |   12642 |       10 |       12641
 role_usage_grants                       |   12646 |       10 |       12645
 user_defined_types                      |   12649 |       10 |       12648
 view_column_usage                       |   12653 |       10 |       12652
 view_routine_usage                      |   12657 |       10 |       12656
 view_table_usage                        |   12661 |       10 |       12660
 views                                   |   12665 |       10 |       12664
 data_type_privileges                    |   12669 |       10 |       12668
 element_types                           |   12673 |       10 |       12672
 _pg_foreign_table_columns               |   12677 |       10 |       12676
 column_options                          |   12681 |       10 |       12680
 _pg_foreign_data_wrappers               |   12684 |       10 |       12683
 foreign_data_wrapper_options            |   12687 |       10 |       12686
 foreign_data_wrappers                   |   12690 |       10 |       12689
 _pg_foreign_servers                     |   12693 |       10 |       12692
 foreign_server_options                  |   12697 |       10 |       12696
 foreign_servers                         |   12700 |       10 |       12699
 _pg_foreign_tables                      |   12703 |       10 |       12702
 foreign_table_options                   |   12707 |       10 |       12706
 pg_statistic_relid_att_inh_index        |       0 |       10 |       12740
 foreign_tables                          |   12710 |       10 |       12709
 _pg_user_mappings                       |   12713 |       10 |       12712
 user_mapping_options                    |   12717 |       10 |       12716
 user_mappings                           |   12721 |       10 |       12720
 sql_sizing                              |   12602 |       10 |       12988
 sql_sizing_profiles                     |   12607 |       10 |       12993
 pg_toast_12606                          |   12609 |       10 |       12995
 pg_toast_12606_index                    |       0 |       10 |       12997
 pg_proc_proname_args_nsp_index          |       0 |       10 |           0
 pg_class_oid_index                      |       0 |       10 |           0
 pg_class_relname_nsp_index              |       0 |       10 |           0
 pg_class_tblspc_relfilenode_index       |       0 |       10 |           0
 pg_class                                |      83 |       10 |           0
 pg_attrdef_oid_index                    |       0 |       10 |       12775
 pg_largeobject_metadata                 |   10909 |       10 |       12822
 pg_constraint_conrelid_index            |       0 |       10 |       12782
 pg_constraint_contypid_index            |       0 |       10 |       12783
 pg_constraint_oid_index                 |       0 |       10 |       12784
 pg_inherits                             |   10002 |       10 |       12785
 pg_trigger_oid_index                    |       0 |       10 |       12842
 pg_enum_typid_sortorder_index           |       0 |       10 |       12861
 pg_db_role_setting_databaseid_rol_index |       0 |       10 |           0
 pg_ts_parser_oid_index                  |       0 |       10 |       12920
 pg_toast_12576                          |   12579 |       10 |       12965
 sql_features                            |   12577 |       10 |       12963
 pg_toast_12576_index                    |       0 |       10 |       12967
 pg_toast_12601_index                    |       0 |       10 |       12992
 sql_parts                               |   12597 |       10 |       12983
 pg_toast_12601                          |   12604 |       10 |       12990
(300 rows)