[Zope] populating form values from a sql method

A users starts with a blank form. She fills in some field values, slects some values form pull-downs. Submits the form which adds a new record into a database. Later, the user wants to update that infomation (or input a NEW record but use that info as a template). What is the cleanest way to pull up that form with the fields already containing the data from that database record? Is there a product that is close to this? Formulator? TIA