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  1. #1
    Join Date
    Apr 2013
    Posts
    72

    Unanswered: Merging two ERD's together

    Hi guys

    Right
    I done the UNF and "designed" two ER Diagrams based on the information given.
    But not quite sure if I did this correctly .... anyone might give a second opinion?

    See the images:

    1st UNF and ERD: http://s14.postimg.org/9egqj21c1/ERD1.jpg

    2nd UNF and ERD: http://s8.postimg.org/igw49o3jn/ERD2.jpg


    Merging two ERD's together : http://s21.postimg.org/t5lyeg2l3/ERD3.jpg


    =================================


    I am not quite sure if (when) merging the two ERD's
    if the Staff_ tables has to have a relationship with the Valation table?


    Cheers

  2. #2
    Join Date
    Jun 2003
    Location
    West Palm Beach, FL
    Posts
    2,713
    Check out these similar Datamodels, they may give some ideas.
    The person who says it can't be done should not interrupt the person doing it. -- Chinese proverb

  3. #3
    Join Date
    Apr 2013
    Posts
    72
    yeh tried to ... but aint really sure on this UNF at all

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