42. The computer system of claim 41 further comprising: a querying module configured to query the parent table using the set of SQL statements to produce the first result set; and a using module configured to use the first result set in constructing a second set of SQL statements to query the child table, wherein the second set of SQL statements comprises SQL statements other than a second statement that joins the second table to another table, and the querying module and the using module reside in the memory unit.
42. The computer system of claim 41 further comprising: a querying module configured to query the parent table using the set of SQL statements to produce the first result set; and a using module configured to use the first result set in constructing a second set of SQL statements to query the child table, wherein the second set of SQL statements comprises SQL statements other than a second statement that joins the second table to another table, and the querying module and the using module reside in the memory unit. 45. The computer system of claim 42 wherein the second set of SQL statements comprises: a query statement for selecting a record having a value of a foreign key field of the second table equal to a value of a target key field in the first result set.