Save a field content to the DB (customization)

Helllo,
I have a requirement to add a textarea to an existing page and save its content to the DB.
I am familiar with customizing/changing the query where-clause in the CO and personalizing pages. But didn't work on a scenario that involves saving (insert) new form fields to DB.
Can anyone provide me directions on how to do so?
thanks

Hi,
Is the page you are customizing a create page
are the fields in this page have a VO and do you need to insert the new data into the table refering to the same VO ?
if the new fields data needs to be inserted in the same VO (EO based ) (same base table on which the EO is referring to)
then just create a new field using personalization and set the view attribute as appropriate, no coding is required in this case
Thanks
Ravi

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