erd diagram

Discussion in 'Green Room' started by s.n.a.g, Sep 27, 2003.

  1. s.n.a.g

    s.n.a.g Guest

    anyone here familiar with erd diagram?

    i would like to know what is the meaning of these err... symbols

    == , -- and o

    thz in advance ;)
     
  2. Khayman

    Khayman I'm sorry Hal... Political User Folding Team

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    They appear to be the Information Engineering notation for expressing, one and only one, one and zero

    unless i've got the completely wrong end of the stick! :)
     
  3. chris

    chris Free to Fly

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    entity relationship diagram ?
     
  4. s.n.a.g

    s.n.a.g Guest

    yes, it's something like that, what does each symbol means?

    yup

    plz help
     
  5. Khayman

    Khayman I'm sorry Hal... Political User Folding Team

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    Location:
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    like i said
    = one and only one
    - one
    o zero

    although it doesn't quite work out of context of the diagram

    this might help
    [​IMG]
     
  6. muzikool

    muzikool Act your wage. Political User

    Ahh... memories of database class last semester. I did a lot of ERDs in that class.
     
  7. s.n.a.g

    s.n.a.g Guest

    oh thz Khayman
    :D