This catalog records information about table inheritance hierarchies.
Table 3-10. pg_inherits Columns
|inhrelid||oid||pg_class.oid||This is the reference to the subtable, that is, it records the fact that the identified table is inherited from some other table.|
|inhparent||oid||pg_class.oid||This is the reference to the parent table, from which the table referenced by inhrelid inherited from.|
|inhseqno||int4||If there is more than one subtable/parent pair (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1.|