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A3.4 Alternative databases and data warehousesA3.4.2

Primary objectives of data warehouses in data management and business intelligence

Explain the primary objectives of data warehouses in data management and business intelligence

AHL≈ 50 minCommand term: ExplainPremium

In this lesson

  • Explaining how a data warehouse differs from the operational databases that run an organisation
  • Explaining the extract, transform, load (ETL) process
  • Explaining the roles of append-only, subject-oriented, integrated, time-variant and non-volatile data, and of data optimised for query performance

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What's inside

  1. LearnWhat a data warehouse is for
  2. LearnExtract, transform, load (ETL)
  3. LabLoad a bookshop's sales
  4. LearnWhat makes a warehouse a warehouse
  5. CheckMatch each property to an example
  6. CheckQuick check
  7. ExamWorked exam answer
  8. ReviewMistakes examiners see
  9. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 12 marks, with a self-marking markscheme.