Storing datagrams in multiple related tables using XSU

Hi,
I'm trying to store an xml document into multiple tables. I have Steve's book and it doesn't seem to provide the solution I need for my problem.
My schema is something like this:
<DATA>
<PERSON> (1 or many elements)
<PERSON_ID></PERSON_ID>
<PERSON_NAME></PERSON_NAME>
<STUDY> (1 or many elements)
<STUDY_ID></STUDY_ID>
<STUDY_NAME></STUDY_NAME>
<SERIES> (1 or many elements)
<SERIES_ID></SERIES_ID>
<SERIES_NAME></SERIES_NAME>
<IMAGE> (1 or many elements)
<IMAGE_ID></IMAGE_ID>
<IMAGE_NAME></IMAGE_NAME>
</IMAGE>
</SERIES>
</STUDY>
</PERSON>
</DATA>
And I want to insert in multiple tables such as PERSON, STUDY, SERIES, IMAGE.
Each of these tables has a foreign key (SID) (from the parent table so that, e.g. for a certain IMAGE you know what SERIES belongs to, and so on.) that is generated by a sequence.
The problem is how to insert the correct foreign key (SID) into the multiple tables, that is, if I generate a SID for PERSON how do I get that value and insert it into STUDY as a foreign key. That supposing I use INSTEAD OF triggers to check for the uniqueness and generate the sequence.
Steve's book does not provide any solution for that in the chapter 14 with XMLloader. And the problem in chapter 12 is not the same I propose here (that is very similar to the one in chapter 14).
Thanks.
- Jose Angel -
null

Thanks,
your solution is good only assuming that all the values are new, but then if you are doing an update the value sequencename.CURRVAL does not correspond with the idprimary.
Unfortunately my triggers do the checking to see if an insert or an upgrade is needed and then act consequently.
Anyway, I think I have a solution and it's using store procedures that will be called by the triggers (instead of doing the operations in the trigger) and will be part of a package so they'll be able to share some kind of global variables (for the package) that will be active as far as the session lasts.
Thanks for your help though.
- Jose angel -
null

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         2 b                                                                    Ants

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