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Multiple ChoiceIntermediate 30s

N+1 Problem

Choose the best answer for: N+1 query problem
Options
  1. 1N+1 is a JOIN issue caused by using INNER JOIN instead of LEFT JOIN
  2. 2N+1 only affects NoSQL stores and never appears with SQL ORMs
  3. 3Loading a list then querying related items one-by-one causes N+1
  4. 4N+1 is solved by normalization, which removes the extra queries

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