1. Top-Down approach • The top down approach build a centralized repository called Enterprise Data Warehouse (EDW) • The data in the EDW is stored in a normalized form in order to avoid redundancy and stored at the most detail level.
1. Top-Down approach• The top down approach build acentralized repository called EnterpriseData Warehouse (EDW)• The data in the EDW is stored in anormalized form in order to avoidredundancy and stored at the most detaillevel.