Reload processing
In Reload processing, the system processes all records in the source tables or table-level files and compares the primary keys of the source records with the primary keys of the records already in the target tables, if any, to determine which records to insert, update, and (in Full mode only) delete. If a reloaded record does not include any data changes, the system simply changes its refresh timestamp to the timestamp of the current job.
Parent topic: Data processing types and modes