🤑 Join the Treehouse affiliate program and earn 25% commission!

Join our Live Career-Building Workshop: Launch Your Tech-Adjacent Career! ⭐ Register here!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

Curious which AI tools Treehouse developers love? ⚙️ Check them out!

🫡 Treehouse for Military offers discounts to Veterans, service members and their families!

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • 100 Days of Code
    • Live Sessions
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • 100 Days of Code Live Sessions Code Adventures Discord Forum Success Stories Treehouse Links
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • 21st Century Skills
      • • AI
      • • Android
      • • APIs
      • • Business
      • • C#
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Equity, Diversity, and Inclusion (EDI)
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • PHP
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
  • Ariana Maksimović
    Ariana Maksimović
    2,797 Points

    What is normalisation of database (in SQL) ?

    Posted March 18, 2021 4:24pm by Ariana Maksimović
    Ariana Maksimović
    2,797 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Database Normalization

    1 Answer

  • Anne-Marie Hofmann
    Anne-Marie Hofmann
    1,776 Points

    Update link pls!

    Posted April 18, 2020 7:27am by Anne-Marie Hofmann
    Anne-Marie Hofmann
    1,776 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • How Normalization Helps Us

    1 Answer

  • Chet Gray
    Chet Gray
    15,624 Points

    This "correct" answer for the meaning of "relational" in "relational database" is misinformed and misleading

    Posted July 25, 2018 4:56am by Chet Gray
    Chet Gray
    15,624 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Database Normalization Review

    1 Answer

  • Welden Bringhurst
    Welden Bringhurst
    1,564 Points

    Several questions are incorrect/poorly worded

    Posted February 27, 2018 8:56pm by Welden Bringhurst
    Welden Bringhurst
    1,564 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Database Normalization Review

    1 Answer

  • Isis van der Plas
    Isis van der Plas
    13,445 Points

    creating a list of unique books in the SQL playground

    Posted October 10, 2017 12:01am by Isis van der Plas
    Isis van der Plas
    13,445 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Set Theory and Relational Databases

    3 Answers

  • Noah Fields
    Noah Fields
    13,985 Points

    "Except", not XOR?

    Posted July 28, 2017 3:03pm by Noah Fields
    Noah Fields
    13,985 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Set Theory and Relational Databases

    1 Answer

  • Kayla Flynn
    Kayla Flynn
    7,652 Points

    How to use SQL off playground

    Posted April 27, 2017 8:25pm by Kayla Flynn
    Kayla Flynn
    7,652 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Why We Make Databases "Relational"

    2 Answers

  • Lukas Baumgartner
    Lukas Baumgartner
    14,817 Points

    Speed vs Speed

    Posted December 20, 2016 7:28am by Lukas Baumgartner
    Lukas Baumgartner
    14,817 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • How Normalization Helps Us

    1 Answer

  • Mohammad Laif
    PLUS
    Mohammad Laif
    Courses Plus Student 22,297 Points

    Is Except the opposite of Intersect in sets?

    Posted November 14, 2016 7:47am by Mohammad Laif
    Mohammad Laif
    Courses Plus Student 22,297 Points
    • Databases
    • Querying Relational Databases
    • Database Normalization
    • Set Theory and Relational Databases

    1 Answer

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

    Treehouse

  • About
  • Blog
  • Careers
  • Community
  • Stories
  • Shop
  • Contact
  • Gift Card

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2024 Treehouse Island, Inc.