PG_FOREIGN_TABLE

PG_FOREIGN_TABLE records auxiliary information about foreign tables.

Table 1 PG_FOREIGN_TABLE columns

Name	Type	Description
ftrelid	oid	ID of a foreign table
ftserver	oid	Server where a foreign table is located
ftwriteonly	Boolean	Specifies whether data can be written in a foreign table. Value range: t (true): yes f (false): no
ftoptions	text[]	Options of a foreign table. For details, see the description of CREATE FOREIGN TABLE.