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مثال هایی از شماهای مختلف پایگاه داده تحلیلی

مثال هایی از شماهای مختلف پایگاه داده تحلیلی. فرشاد آقابزرگی 87131003 هوش تجاری. منابع. Ramakrishnan , Gehrke : “Database Management Systems”, Chapter 25, Section 25.2 S. Chaudhuri , U. Dayal : An Overview of Datawarehousing and OLAP Technology. Star schema. Time. Location. SALES.

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مثال هایی از شماهای مختلف پایگاه داده تحلیلی

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  1. مثال هایی از شماهای مختلف پایگاه داده تحلیلی فرشاد آقابزرگی 87131003 هوش تجاری

  2. منابع • Ramakrishnan, Gehrke: “Database Management Systems”, Chapter 25, Section 25.2 • S. Chaudhuri, U. Dayal: An Overview of Datawarehousing and OLAP Technology

  3. Star schema Time Location SALES TimeId LocationId STAR SCHEMA Year Description Quarter City Sales Month District Day TimeId 25 tuples < 5*365 tuples LocationId ProductId Product SalesPerId SalesPerson ProductId Quantity SalesPerId Prod_Name UniPrice SPName Product_Type Total Industry 3 125 tuples tuples < 17 109 375 x 10 3000 tuples

  4. Star schema-extention

  5. snowflake Venue Dimension Fact Table Gender Dimension Sport Dimension Olympiad Dimension 3NF Event Class Table Sport Table

  6. A multiple aggregates constellation Sales_District District TimeId DistrictId DistrictId ProductId Dist_Desc Quantity Amount City Sales_City TimeId time CityId CityId City_Desc ProductId DistrictId Quantity Amount product Sales_Shop Shop TimeId ShopId ShopId ProductId Shop_Desc Quantity CityId Amount

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