Re: [egov] Naming and Design Rules for E-Government

["Monica J. Martin" <Monica.Martin@Sun.COM>]

>Spencer: My approach has therefore been to use XML Schema to define the international
>standard, then Schematron to add constraints to form a national standard.
>This is the approach we used within OASIS for the Election Markup Language.
>We have been using this successfully in the UK and it will shortly be
>adopted in many other countries. The approach is to define the international
>standard using XML Schema, then the national standard using Schematron *just
>to indicate the additional constraints*. The Schematron forms the normative
>definition of the constraints (and has the additional advantage that it can
>express constraints that XML Schema cannot) but it is then up to
>implementers whether they implement this two-stage validation or choose some
>other mechanism. I have implemented a validator that checks EML messages
>first to the international standard, then the additional national
>constraints.
>  
>
mm1: Paul, one point of reference. One other standard's effort of which 
I am involved, has decided to use XSL transformation instead Schematron, 
mainly because a standard should be based (if needed) on other standards 
not tools. Food for thought. Thanks.

>.....
>The description of the EML UK Customization and the Schematron schemas
>themselves can be downloaded from
>http://www.govtalk.gov.uk/schemasstandards/agreedschema_schema.asp?schemaid=
>201.
>
>Regards
>
>Paul Spencer
>Director
>Boynings Consulting Ltd
>http://www.boynings.co.uk
>  
>