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What is Data Warehouse and ETL Concepts Explained about?

A Data Warehouse (DW) is a centralized repository for historical data from various sources, primarily used for business intelligence and decision-making. The ETL process involves extracting, transforming, and loading data into the DW, while Data Marts serve specific business functions. Data modeling techniques, such as Star and Snow-Flake schemas, are used to optimize data for query performance, and Slowly Changing Dimensions (SCD) manage changes in dimension data over time.

Author

maheshkaikala

Language

EN