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Thread: Shared key

  1. #1
    Join Date
    May 2017
    Posts
    1

    Unanswered: Shared key

    Hello every body,

    I have a question. I want create a shared key between X table.

    I will have an selector table wich select between 3 Choice.

    Click image for larger version. 

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  2. #2
    Join Date
    Oct 2007
    Posts
    161
    Provided Answers: 9
    so, what is your question?

  3. #3
    Join Date
    Jan 2017
    Posts
    18
    Super Key
    Candidate Key
    Primary Key
    Foreign Key
    Alternate Key
    Composite Key
    Unique Key

  4. #4
    Join Date
    Oct 2007
    Posts
    161
    Provided Answers: 9
    still don't see a question here. I have one though. Looking at your diagram, why would you have an id for all three choice tables? I would go with the one key and use the same key in all three tables.

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