Setting values for non-displayed fields on a Tabular Form

I'm having a problem setting non-displayed fields on the same table as displayed fields like last_update_date, last_updated_by, id's and other fields when creating new records or updating existing records in a Tabular form.
What is the best and easiest way to set these values without using database triggers?

Hi Jes,
I'm a little reluctant to use database triggers as I used this product a couple of years ago and I'm fairly sure I handled this problem in HTML DB without the use of triggers. I am therefore I'm getting a touch frustrated that I can't remember how to do it now !!
Do you know of any way of setting values for non-displayed fields on a Tabular Form without using database triggers?
Also, you seem to be suggesting that database triggers is the best way to do this?
Thanks

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