SQL for Java Devs · interview question
Why do teams use SQL JOINs to fetch relational data in a single query in production code?
Multiple choiceMediumchapter-8-curatedpremiumsql-for-java-devsjoins
Answer and explanation
Correct answer
C. Reduces network traffic by consolidating data retrieval
Why
Using JOINs to fetch data from multiple tables in one query reduces network traffic because fewer database calls are made, consolidating data retrieval into a single operation.
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