How to call a package in a trigger

I have package that is called via a "Submit" in a from used to enter daily production. We are implementing a barcoding system that will automatically populate the tables behind this form (one header and one line level table). I need to write a trigger or something that fires up the code behind the 'Submit' process whenever these tables are updated.
Is there a way to do this by calling the package in a trigger?
Please help.
Thanks
Edited by: asgar_amin on Feb 3, 2009 10:50 AM

I'm not quite sure what your requirement is.
Do you want to know which forms-trigger you can use to call your submit-package, or do you want to know how to call the submit-package from a database-trigger?
If the second one, it depends on what parameters your package-procedur/function gets as IN-parameters. Is it the ID of the header-record, the detail-record or no parameter at all.
Depending on that you could either use a AFTER-STATEMENT-trigger on either Header or lines-tables, or if you have to gather the ids a combination of a BEFORE-STATEMENT, an AFTER-INSERT FOR EACH ROW and an AFTER-STATEMENT-trigger.
To go more into detail, please provide some more information.

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Terry Chen wrote:
Dear all:
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