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On Tue, Sep 27, 2016 at 7:41 AM, Michael Kay <mike@saxonica.com> wrote:


I suspect that the kind of people who define models like the XML schema model and the relational model are more comfortable with maths and legalese English than with pictures. So I think it tells you more about the psychology of the individuals concerned than anything else.



Yeah. My initial reaction when I first encountered Object Constraint Language was this is just a demathematised version of Z.

Interestingly Schematron is considered to be an alternative to OCL. I'm not sufficiently qualified to offer an opinion but it has certainly been looked at.

https://www.seegrid.csiro.au/wiki/AppSchemas/MetadataProfiles#OCL_vs_Schematron
http://www.balisage.net/Proceedings/vol8/print/Maly01/BalisageVol8-Maly01.html



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