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What is Data Warehouse Overview and Schemas about?

A data warehouse is a relational database designed for analysis rather than transactions. It contains historical data from multiple sources to support decision making. Key characteristics include being subject-oriented, integrated, and time-variant. A multidimensional data model organizes data into dimensions and facts. Common schemas for a data warehouse include star and snowflake schemas. A data mart contains a subset of data focused on a specific business function or department.

Author

nehakumari55115

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EN