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Data warehousing ralph kimball - PowerPoint PPT Presentation

Data Preprocessing

Data Preprocessing. Relational Databases - Normalization Denormalization Data Preprocessing Missing Data Missing values and the 3VL approach Problems with 3VL approach Special Values. Remember: Relational Databases. Model entities and relationships

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741 views • 56 slides

Data Warehousing

Data Warehousing. Sushanthan Premanath & Indrajith Premanath CSCI 4707. A Quick Summary. The Main Protagonists. Bill Inmon Born 1945 Father of Data Warehousing. Ralph Kimball Born 1944 Commercialized Data Warehousing. Big Data. The data should be de-normalized to 2NF.

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293 views • 5 slides

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Data warehousing ralph kimball - PowerPoint PPT Presentation

Data Preprocessing

Data Warehousing