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Querying Relational Databases

  • Unique Keys 2:06
  • Primary Keys 1:59
  • Database Keys Review 4 questions
  • Foreign Keys 4:36
  • Foreign Keys Review 5 questions

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You have completed Database Keys Review!

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Quiz Question 1 of 4

What data type does a primary key have to be?

Choose the correct answer below:

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  • A
    Integer
  • B
    Text
  • C
    Either, as long as the value guarantees uniqueness
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