v9 Editable grid using a table with a primary key

I've created an editable grid in v9 using an oracle database.  The grid is using a table BO.  The table has a primary key that is set via a trigger on insert into the table.  Since the primary key is obviously not allowed to be null and can not repeat I get an error when I try to submit my form and don't have the primary key field as a column in my editable grid.  I'm wondering if there is a way to have an editable grid and not fill out the primary key since it is generated by a trigger during the insert.  I would hate to have to generate a unique number as a primary key for each inserted row that would then get overwritten by the trigger.

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