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  • Re: Subset constraint terminology

     Thank you!  That's a very helpful way of thinking about the "simple" qualifier.  "Simple subset constraint" it is.  Matt 
    Posted to ORM Techniques (Forum) by Matt Nizol on 08-27-2014
  • Re: Subset constraint terminology

    Thanks, Matt.  Given the standard use of "simple" to qualify internal uniqueness constraints that cover one role and non-disjunctive mandatory constraints, I also had thought that "simple" would be a reasonable qualifier for the type of subset constraint in question.  However, I don't see "simple subset ...
    Posted to ORM Techniques (Forum) by Matt Nizol on 08-27-2014
  • Subset constraint terminology

    Is there a standard qualifier to distinguish a subset constraint that covers exactly one subset role and one superset role from other forms of the constraint?  In the BBB, I see the terms "pair-subset", "tuple-subset", and "join-subset" used to distinguish more complex forms of the constraint.  Is it ...
    Posted to ORM Techniques (Forum) by Matt Nizol on 08-27-2014
  • Role value constraints in ORM2

    My understanding from reading http://www.orm.net/pdf/ORM2.pdf is that role value constraints were introduced in ORM version 2; thus, value constraints in ORM version 1 applied only to object types.  Can someone confirm?   Thanks, Matt 
    Posted to ORM Techniques (Forum) by Matt Nizol on 08-12-2014
  • Spanning Role Value Constraint

    May a value constraint span multiple roles in ORM?  Examples in the "Big Brown Book" seem to cover only one role.  Consider the below example.  If the example constraint is invalid, might an alternative be to objectify the spanned roles and then apply a value constraint to the objectified type? Best, Matt   
    Posted to ORM Techniques (Forum) by Matt Nizol on 03-26-2014
  • Re: Population validation on a join subset constraint

    Does any tool (separate from NORMA) exist to check whether a sample population satisfies all constraints in an ORM model? Thanks, Matt
    Posted to NORMA (Forum) by Matt Nizol on 02-12-2014
  • Specifying a Join Path for an External Uniqueness Constraint

    Hello, Is it possible in the latest version of NORMA for VS 2008 to specify a join path for an external uniqueness constraint? The below model produces the following error: "Constraint 'ExternalUniquenessConstraint1' in model 'ORMModel1' requires a join path". I would like to join along the "A rolls up to ...
    Posted to NORMA (Forum) by Matt Nizol on 10-02-2013
Page 1 of 1 (7 items)
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