22. The semantic relational database of claim 21 wherein the multipart key further includes a Timestamp that is a date-time value used to track and discriminate upgrades and edits of a value of the data item identified by the Install Number and the Item Number.
22. The semantic relational database of claim 21 wherein the multipart key further includes a Timestamp that is a date-time value used to track and discriminate upgrades and edits of a value of the data item identified by the Install Number and the Item Number. 23. The semantic relational database of claim 22 wherein the multipart key further includes an Update Tracking flag used to track whether the data is inserted, deleted or other mode.