Attribute History Table and Correction

Correction is when there is a change made in a record, but without the creation of a new version. To track the changes made to the attributes, the table ATTRIBUTEHISTORY is implemented.

When a state is changed, an entry is created in the ATTRIBUTEHISTORY table to note this. Similarly, when a record is deleted, the ACTIVE flag change is noted.

Correction updates the record and also transfers the ownership of the version to a new processlog ID and owner ID. In this case, when a step is being rolled back, the attribute history is removed for the steps which are being rolled back.