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  • Feature request: Generate Insert Statements from Sample Population

    Hello everybody, not sure whether this is on the roadmap, but what do you think of NORMA generating SQL insert statements from the sample population? It could be of great help to developers looking to get a QA database up and running. On a related note: would it be outside of reasonable scope for NORMA to be generating test data? For example, ...
    Posted to Open Discussion & Feature Requests (Forum) by ekharlamova on Wed, Apr 4 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Ken Evans"][quote user="Looopy"]. the thing i am try to accomplish is that both a employee and customer can share the same login and its not mandatory that they should be able to login and its not mandatory for a person to do a login either. [/quote]  Please refer to my example. If you: 1: remove the ...
    Posted to Technical support (Forum) by Looopy on Tue, Feb 28 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Andy Carver"]Hi, Yes you are correct, there should be a way to do it and there isn't. ORM's Rmap algorithm stipulates that in relational-mapping a 1:1 fact type like yours with mandatory constraints either on both roles or on neither roles (as in your case), the user needs a way to input his / her preference as ...
    Posted to Technical support (Forum) by Looopy on Tue, Feb 28 2012
  • Re: Relational View with 0..1 to a 0..1

    [quote user="Looopy"]. the thing i am try to accomplish is that both a employee and customer can share the same login and its not mandatory that they should be able to login and its not mandatory for a person to do a login either. [/quote]  Please refer to my example. If you: 1: remove the mandatory requirement in the fact type ...
    Posted to Technical support (Forum) by Ken Evans on Tue, Feb 28 2012
  • Re: Relational View with 0..1 to a 0..1

    Hi, Yes you are correct, there should be a way to do it and there isn't. ORM's Rmap algorithm stipulates that in relational-mapping a 1:1 fact type like yours with mandatory constraints either on both roles or on neither roles (as in your case), the user needs a way to input his / her preference as to which table that 1:1 should be ...
    Posted to Technical support (Forum) by Andy Carver on Mon, Feb 27 2012
  • Re: Relational View with 0..1 to a 0..1

    Hi Again, Thanks for the tips Ken about the book. But still i think i will get in a situation that i don't agree on how norma generates the DDL SQL. Like now then it got the foreign keys on weblogin but i could fool the tool by adding and removing the mandatory flag and resave the model and then i get the foreign keys at customer and ...
    Posted to Technical support (Forum) by Looopy on Mon, Feb 27 2012
  • Re: Relational View with 0..1 to a 0..1

    If you want to learn ORM, then I recommend that you get Terry's book "Information Modeling and Relational Databases Second Edition". It has lots of examples and exercises so you can use it as a reference and also go through the exercises. [quote user="Looopy"]what if i wish to insert a person in my model that should not ...
    Posted to Technical support (Forum) by Ken Evans on Mon, Feb 27 2012
  • 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
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