Question : cascading inserts; passing new seq # to child tables

for the following tables,
tableA (tableA_pk, tableB_fk, col1)
tableB (tableB_pk,col1,col2,col3,col4,col5)
tableC (tableA_fk, col1, col2, col3)
tableD (tableD_pk, col1,col2,col3,col4,col5,col6, col7)

what logic can you envision to do the following?

we can create 2 sequence for tableB and tableA; but how do you pass on the new sequence number to the child records?

--create new records in tableB based on tableD match
INSERT into tableB b
select createnewpk, d.col3,d.col4,d.col5,d.col6, d.col7
from tableB b , tableD d where d.col1 = b.col1 and d.col2 and b.col2

--create new record for child records in tableA (no conditions involved)
INSERT into tableA a
select createnewpk, b.generated_newpk, col1

--create new record for child records in tableC but update the data based on tableD match.
INSERT into tableC c
select a.generated_newpk,.d.col5, d.col6, d.col7 from
tableC c, tableD d where c.col1 = d.col5 and c.col2 = d.col6 and c.col3= d.col7

Answer : cascading inserts; passing new seq # to child tables

When you use a sequence you use the following construct to get a new value from it:

seqname.nextval

You can then refer to the current value of the sequence (without generating new values) by using the following:

seqname.currval

So by including the currval in you insert statements you associate the child rows with their parents.