Metadata
Technology & Computer Science Undergraduate Apply Medium
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Metadata

  • Subject

    Technology & Computer Science

  • Education level

    Undergraduate

  • Cognitive goals

    Apply

  • Difficulty estimate

    Medium

  • Tags

    sql, indexing, EXPLAIN, query optimization, joins, relational schemas

  • Number of questions

    5

  • Created on

  • Generation source

  • License

    CC0 Public domain

  • Prompt

    Assess students' ability to write and optimize SQL queries for normalized relational schemas by choosing and applying appropriate indexes, rewriting queries and join strategies, and interpreting EXPLAIN / EXPLAIN ANALYZE output to diagnose and fix performance issues; scope includes index types, selectivity, covering/composite indexes, and avoiding full table scans.
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Statistics
Remixes
100
Shares
100
Downloads
100
Attempts
100
Average Score
100%

Mock data used for demo purposes.