CMU Database Systems - 02 Relational Algebra (Fall 2017)

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  • Опубликовано: 22 дек 2024

Комментарии •

  • @dragonfly3139
    @dragonfly3139 7 лет назад +10

    Thank you Professor Andy for the wonderful lecture, I have been watching most of the lectures on your channel I hear you all the time talk about you and your students getting involved with police and law enforcement. I don't understand why these nut jobs are targeting you. I hope you are safe. take care

    • @supergogetaSS4return
      @supergogetaSS4return 2 года назад

      That's what you get when you're involved in databases. It's a risky endeavour.

  • @jdfesa
    @jdfesa 11 месяцев назад

    35:20 In relational algebra, the UNION operator removes duplicate rows, so the row a3, 103 would appear only once in the result, just like in SQL. If you wanted to retain duplicate rows, you could use the UNION ALL operation, if it were available in your relational algebra system.

  • @BULLSHXTYT
    @BULLSHXTYT 7 лет назад +3

    Take care Professor. You are great.

  • @danyeun01
    @danyeun01 9 месяцев назад

    as a non-cmu student, the first minute of talking about getting arrested by the police caught me so off guard lol

  • @mesarvagya777
    @mesarvagya777 5 лет назад +5

    You know a professor is cool if he knows Wu-Tang Clan and Biggie.

  • @nyx4853
    @nyx4853 6 лет назад +2

    Excellent presentation!

  • @imflash217
    @imflash217 7 лет назад +3

    Is there any way for non-CMU students to verify their solutions of the assignemts? Will there be any Homework Recitation sessions that will be uploaded (obviously after a particular HW is due)?

    • @sensationQQQ
      @sensationQQQ 7 лет назад

      also need auto grading script here!

    • @sensationQQQ
      @sensationQQQ 7 лет назад

      just like the 15-213 course ,hope professor can supply selfstuday hand-out..Thx!

    • @wenchaohu3944
      @wenchaohu3944 7 лет назад +2

      There are solutions on the website, you can check them yourself. 15445.courses.cs.cmu.edu/fall2017/assignments.html

    • @sensationQQQ
      @sensationQQQ 7 лет назад

      thx.I found it.

  • @kenken7630
    @kenken7630 2 года назад +1

    Thank you explained it really well.

  • @nur-a-alamabir8922
    @nur-a-alamabir8922 6 лет назад

    Please re upload the lecture note

  • @Krisztyan
    @Krisztyan 6 лет назад

    Where can I find the lecture notes? Super lecture again!

    • @architpandey9049
      @architpandey9049 6 лет назад

      15445.courses.cs.cmu.edu/fall2017/schedule.html

    • @Krisztyan
      @Krisztyan 6 лет назад

      Archit Pandey thx

  • @wnw8079
    @wnw8079 7 лет назад

    Wow, Amazing lecture finally deliver ;)

  • @felipegutierrez7856
    @felipegutierrez7856 6 лет назад +1

    thanks. very very helpful

  • @isabelmayo8843
    @isabelmayo8843 6 лет назад

    Fantastic!! Thanks so much!!

  • @YasuoMidOnly
    @YasuoMidOnly 5 лет назад

    Nice