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Created and where is the Last Change data held?
Can I get information about the table location in SQL.
It's in civicrm_log. Entity_id matches civicrm_contact.id and entity_table='civicrm_contact'. Modified_id is the contact id of who modified it.
Or if you have detailed logging turned on there's also entries in the log_civicrm_xxx tables.
It's in the civicrm_contact table
Required, but never shown