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Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

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BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 13, Problem 18RQ
Textbook Problem
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Explain the use of facts, dimensions, and attributes in the star schema.

Program Plan Intro

Star Schema:

  • Star schema is used in database with multiple dimensions.
  • The star schema is very parallel to the snowflake schema.
  • A schema in which different tables are related to fact table, with the help of foreign key or primary key is known as star schema.

Explanation of Solution

Usage of facts, dimensions, and attributes present in the star schema:

Facts:

  • Facts are the values that represent the numeric measurement of the specific business.
  • For example, sales represent the numeric values which can be stored in a table.
  • Use: This is used in business data analysis to measure the units, costs, prices, and revenue.

Dimensions:

  • The facts represented in the table are linked through the connections called dimensions.
  • Use: Dimensions are additional view for the fact table and it is mostly required because the business data are viewed in the relation to other data...

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