ocr: sesasy Heawcleaning, standardizing, - - 3 and summanaing Daa varenouse puere srasqton ever owsstorns 3 ou dssacuons ightcleaning 0l801@.restructunng weridhtg Figure 1The original ODS architecture necessitated two pathways and two systems because: the main: data warehouse wasn't prepared tostore Ow-level transactions.