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  • Re: Relational View with 0..1 to a 0..1

    Hi Ken, [quote user="Ken Evans"] Looopy, Maybe I'm wrong, but I get the impression that you have some notion of what the relational model "should" look like and then you are trying to work back from that to define an object-role model that fits what you think "should" be the case. [/quote] No i tried ...
    Posted to Technical support (Forum) by Looopy on Sun, Feb 26 2012
  • Re: Relational View with 0..1 to a 0..1

     Looopy, Maybe I'm wrong, but I get the impression that you have some notion of what the relational model "should" look like and then you are trying to work back from that to define an object-role model that fits what you think "should" be the case. The recommended procedure is to begin by defining what you want to ...
    Posted to Technical support (Forum) by Ken Evans on Sun, Feb 26 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Clifford Heath"] Do you intend that an Employee who is also a Customer can have two WebLogins? You do know that there is no implicit exclusion between two subtypes as in some O-O languages? You can add an exclusion constraint if necessary. [/quote] No they should be using the same weblogin but its not mandatory that ...
    Posted to Technical support (Forum) by Looopy on Sun, Feb 26 2012
  • Re: Relational View with 0..1 to a 0..1

    A subtype cannot be independent (of its supertype). Try making the supertype independent first (not sure that'll work though, it depends on the interpretation NORMA applies). Do you intend that an Employee who is also a Customer can have two WebLogins? You do know that there is no implicit exclusion between two subtypes as in some O-O ...
    Posted to Technical support (Forum) by Anonymous on Sun, Feb 26 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Clifford Heath"]Nothing in your model requires the FK to be in a particular direction. Just a thought; try setting Customer "Independent" in the Property pane. I think that will skew the absorption to decide that Customer is a table (while it's still making up its mind about a WebLogin). However, surely the ...
    Posted to Technical support (Forum) by Looopy on Sat, Feb 25 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Ken Evans"]Thanks for your question, however, as I'm sure that you know, the orm diagram you posted is not the same as that which is reflected in the relational view. The orm diagram that you posted just gives a single table. So it would be helpful if you posted both the object-role model and the relational view of that ...
    Posted to Technical support (Forum) by Looopy on Sat, Feb 25 2012
  • Re: Relational View with 0..1 to a 0..1

    I have a Employee that can have a WebLogin, those weblogin should not be connected to a Customer if they are not the same. But i will try to set it as "Independent" and se what happens. Thanks for the tip!
    Posted to Technical support (Forum) by Looopy on Sat, Feb 25 2012
  • Re: Relational View with 0..1 to a 0..1

    I have a Employee that can have a WebLogin, those weblogin should not be connected to a Customer if they are not the same. But i will try to set it as "Independent" and se what happens. Thanks for the tip!
    Posted to Technical support (Forum) by Looopy on Sat, Feb 25 2012
  • Re: Relational View with 0..1 to a 0..1

    Thanks for your question, however, as I'm sure that you know, the orm diagram you posted is not the same as that which is reflected in the relational view. The orm diagram that you posted just gives a single table. So it would be helpful if you posted both the object-role model and the relational view of that model and then pointed out the ...
    Posted to Technical support (Forum) by Ken Evans on Sat, Feb 25 2012
  • Re: Relational View with 0..1 to a 0..1

    Nothing in your model requires the FK to be in a particular direction. Just a thought; try setting Customer "Independent" in the Property pane. I think that will skew the absorption to decide that Customer is a table (while it's still making up its mind about a WebLogin). However, surely the WebLogin role on your one-to-one is ...
    Posted to Technical support (Forum) by Anonymous on Sat, Feb 25 2012
Page 94 of 339 (3386 items) « First ... < Previous 92 93 94 95 96 Next > ... Last »
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