SCD (Slowly Changing Dimension) is a technique used in data warehouses to manage dimension data that changes very slowly over time. It is an approach designed to track and preserve historical changes in data related to specific attributes or dimensions. SCD enables organizations to monitor data evolution and track how relationships between attributes within a given dimension change over an extended period. This is a crucial tool for trend analysis and business decision-making based on evolving data, ensuring consistency and accuracy in data warehouses.
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