Ralph Kimball (born July 18, 1944[1]) is an author on the subject of data warehousing and business intelligence. He is one of the original architects of data warehousing and is known for long-term convictions that data warehouses must be designed to be understandable and fast.[2][3] His bottom-up methodology, also known as dimensional modeling or the Kimball methodology, is one of the two main data warehousing methodologies alongside Bill Inmon.[2][3]
He is the principal author of the best-selling[4] books The Data Warehouse Toolkit (1996),[5] The Data Warehouse Lifecycle Toolkit (1998), The Data Warehouse ETL Toolkit (2004) and The Kimball Group Reader (2015), published by Wiley and Sons.
There are many ways to construct data warehouses, but the two dominant ones have been proposed by Bill Inmon and Ralph Kimball.
Bill Inmon and Ralph Kimball are the two pioneers that stated different philosophies in enterprise-wide information gathering, information management, and analytics for decision support.
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