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题目答案是否出错 #1

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Kevin-Kevin opened this issue Feb 25, 2021 · 1 comment
Open

题目答案是否出错 #1

Kevin-Kevin opened this issue Feb 25, 2021 · 1 comment

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@Kevin-Kevin
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Kevin-Kevin commented Feb 25, 2021 •
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关于第一次作业第二大题的第一小题

  1. 给出由 LODON(伦敦)的厂商供给 LODON 的工程的产品号。
    image-20210225122440764
    image-20210225122505686
    ΠSNO,PNO(SPJ)÷ΠSNO(σCITY=LONDON(S))
    这里是否漏掉了 供给 London 的条件
@2259428768
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是啊Kevin哥，这个第一题我也觉得答案有问题

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@Kevin-Kevin @2259428768