The global right(Audit Trail - Access) provides resources the ability to select the operations of insert,deletion, and changes of object attributes/fields
The results of the following query can be reviewed to find out who made changes and when:
select * from ODF_AUDITED_ATTRIBUTES
order by object_code, last_updated_date desc;
To remove rows from the Audit Trail page or purge the audit data from the database you can enter a specific number of days