PG_INHERITS

PG_INHERITS records information about table inheritance hierarchies. There is one entry for each direct child table in the database. Indirect inheritance can be determined by following chains of entries.

Table 1 PG_INHERITS columns

Name	Type	Reference	Description
inhrelid	oid	PG_CLASS.oid	OID of a child table
inhparent	oid	PG_CLASS.oid	OID of a parent table
inhseqno	integer	-	If there is more than one direct parent for a child table (multiple inheritances), this number tells the order in which the inherited columns are to be arranged. The count starts at 1.