Hi,
I have a table (ParentVal) with four child tables (ParentValA, ParentValB, ParentValC, ParentValD) each with foreign key constraints.
ParentVal has 15000 records
ParentValA has 1000000 records
ParentValB has 2000000 records
ParentValC has 15000000 records
ParentValD has 30000000 records...