Elementary Key Attributes

  • TomThomson

    SSC Guru

    Points: 104773

    Comments posted to this topic are about the item Elementary Key Attributes

    Tom

  • BrainDonor

    SSCoach

    Points: 19234

    96% of answers incorrect - you'll be popular! No cheap points here.

    Steve Hall
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  • Carlo Romagnano

    SSC-Insane

    Points: 22024

    I get it wrong, but I like this kind of questions.

    Thanks.

  • paul s-306273

    SSChampion

    Points: 10615

    Not quite sure of the relevance of this question.

    (Or is that just sour grapes - 2correct answers, 118 incorrect answers so far!)

  • Iulian -207023

    SSCertifiable

    Points: 7509

    Nice one , thank you,

    Iulian

  • hodgy

    SSCertifiable

    Points: 5735

    Ah, I was researching elemenTARTY keys, probably why I got it wrong 😉

    Life: it twists and turns like a twisty turny thing

  • Thomas Abraham

    SSChampion

    Points: 10761

    I said C only: Some other attribute B is fixed by a set including A but by no subset of that set - which is clearly true.

    Couldn't get the other two parts though. I guess I join the 98% of answerers that aren't database professionals.

    Thanks for the question.

    [font="Verdana"]Please don't go. The drones need you. They look up to you.[/font]
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  • TomThomson

    SSC Guru

    Points: 104773

    L' Eomot Inversé (10/4/2011)


    Comments posted to this topic are about the item <A HREF="/questions/Normalisation/74786/">Elementary Key Attributes</A>

    I find it quite frightening that so few people know enough about normalisation to get this one right.

    Tom

  • venoym

    SSCarpal Tunnel

    Points: 4161

    My only comment is that there is no identifier (per other QOTD's) of how many answers to answer... I got 2 out of 3 but still marked as wrong.

  • sturner

    SSC-Insane

    Points: 22411

    I got two out of three, which is okay with me.

    Of all of my skills and talents, the ability to recite every obscure factoid about relational databases (or any other software system or process) is not at the very top of the list. That place is reserved for critical thinking, analysis and application of experience and creativity to solve problems effectively.

    The probability of survival is inversely proportional to the angle of arrival.

  • John Mitchell-245523

    SSC Guru

    Points: 148777

    L' Eomot Inversé (10/5/2011)


    I find it quite frightening that so few people know enough about normalisation to get this one right.

    I don't. This question is couched in abstract language. "Elementary key", "prime attribute"and "fixed" aren't part of the everyday SQL Server vernacular. Don't get me wrong - I'm not complaining, since I found it an educational experience. I just think more people would have got it right if the terminology had been a bit more familiar.

    John

  • Steve Jones - SSC Editor

    SSC Guru

    Points: 721420

    Updated the question to say "select 3". My apologies for missing that.

  • sjimmo

    SSChampion

    Points: 11139

    Good question, got it right but only after flip flopping back and forth on a couple of the choices because the verbage was so close.

    Really god tthe juices going.

    thanks

    Steve Jimmo
    Sr DBA
    “If we ever forget that we are One Nation Under God, then we will be a Nation gone under." - Ronald Reagan

  • This was removed by the editor as SPAM

  • Rob Schripsema

    SSCertifiable

    Points: 7469

    Who can explain why the fifth option, "A on its own is a candidate key of T" is NOT true? What am I missing here?

    Rob Schripsema
    Propack, Inc.

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