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The ETL (Extract, Transform, Load) process is the foundation of data warehousing and enables organizations to integrate data from multiple operational systems into a centralized repository for analysis and decision-making. In a business environment, data is often distributed across e-commerce platforms, Enterprise Resource Planning (ERP) systems, and Customer Relationship Management (CRM) systems. These systems generate heterogeneous data in different formats, structures, and update frequencies. ETL consolidates this information into a unified data warehouse, ensuring consistency, accuracy, and reliability. The first stage is Extraction, where data is collected from various source systems without affecting their normal operations. In an e-commerce system, extracted data includes customer orders, product details, website transactions, payment records, shopping carts, and delivery information. ____ _______ _______ _________ ______.
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