How can I make the modified by columns for objects show the user that modified it and not the owner of the object? For instance, I have a table named foo that is owned by enterprisedb user in the xyz shema. I log in as user 'simple' and perform a delete on a row from table foo and it completes. When I look at the table info is shows modified by enterprisedb instead of being modified by 'simple'. Is there a parameter that can be changed or something I can do to change that so that we can tell who made what changes in the database?