The system catalog table
pg_foreign_table contains auxiliary information about foreign tables. A foreign table is primarily represented by a
pg_class entry, just like a regular table. Its
pg_foreign_table entry contains the information that is pertinent only to foreign tables and not any other kind of relation.
||oid||pg_class.oid||OID of the
||oid||pg_foreign_server.oid||OID of the foreign server for this foreign table.|
||text||Foreign table options, as “keyword=value” strings.|
Parent topic: System Catalogs Definitions