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Home > Build Datastores From Scratch > Build Datastores From Scratch > Refining your Relational Database System

Let's test your knowledge. Click the correct answer from the options.

Which of the following best describes the purpose of joins in a relational database?

Click the option that best answers the question.

  • Joining two or more tables based on unrelated columns
  • Repeating rows in two different tables
  • Joining two or more tables based on a related column
  • Deleting columns in a table

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