The catalog pg_inherits records information about table inheritance hierarchies.
Table 43-17. pg_inherits Columns
|inhrelid||oid||pg_class.oid||The OID of the child table.|
|inhparent||oid||pg_class.oid||The OID of the parent table.|
|inhseqno||int4||If there is more than one parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1.|
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