Data Marts Overview

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Questions and Answers

What is the primary purpose of a data mart?

  • To store historical data without any filtering
  • To provide quick access to relevant data for specific departments (correct)
  • To replace the need for a data warehouse entirely
  • To serve as a comprehensive repository for all company data

Which statement accurately describes a dependent data mart?

  • It is built by aggregating data from various external sources
  • It serves only a single department within the organization
  • It operates entirely independent of any existing data systems
  • It is sourced from an existing data warehouse (correct)

What distinguishes an independent data mart from dependent data marts?

  • Independent data marts are always more complex than dependent ones
  • Independent data marts require a data warehouse to function properly
  • Independent data marts are exclusive to the marketing department
  • Independent data marts are created without relying on a data warehouse (correct)

Which of the following is NOT a characteristic of data marts?

<p>They provide slow access to data for analytical purposes (A)</p> Signup and view all the answers

Why might a company choose to implement independent data marts?

<p>To allow faster implementation without waiting for a data warehouse (A)</p> Signup and view all the answers

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Study Notes

Data Marts

  • Serve as smaller, specialized segments of a data warehouse.
  • Designed to meet the specific data needs of departments or business areas, such as sales or marketing.
  • Enable quick access to pertinent data for teams, enhancing efficiency and decision-making.

Types of Data Marts

  • Dependent Data Mart:

    • Sourced directly from an existing data warehouse.
    • Relies on the centralized data repository for its data supply.

  • Independent Data Mart:

    • Created independently of a data warehouse.
    • Function autonomously, utilizing data from various sources without external data warehouse reliance.

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