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A3.2 Database designA3.2.3

Data types used in relational databases (MySQL)

Outline the different data types used in relational databases

SL + HL≈ 40 minCommand term: OutlinePremium

In this lesson

  • The main string, numeric, Boolean and date and time data types
  • Why the same kind of data should always have the same type
  • What goes wrong when the wrong data type is chosen

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What's inside

  1. LearnCommon data types
  2. LabType the Order table
  3. LearnWhy the type matters
  4. CheckChoose the type
  5. ExamWorked exam answer
  6. ReviewMistakes examiners see
  7. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 11 marks, with a self-marking markscheme.