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Source integration was a particular focus of the enterprise data warehouse architecture design. Using an ETL (Extract, Transform, Load) approach, I customized the processes of extracting data, cleaning it, and transforming it into a single format. This ensured consistency and availability of information to analytical systems. ETL process automation tools were applied to minimize human error and reduce data processing time. In addition, state-of-the-art data quality assurance techniques were utilized, including monitoring for anomalies and automatic failure notifications.