Re: [xml-dev] XML Schema as a data modeling tool

Hi Hans-Juergen,

This is exactly what we do with Multi-Level Healthcare Information Modelling (MLHIM).

We have a generic reference model in XML Schema 1.1 and then develop concept models as constraints against the reference model. The concept models are called Concept Constraint Definitions (CCDs). Since each reference model can exist forever, each CCD also offers the permanence required for longitudinal healthcare applications. Since the models offer syntactic and semantic constraints outside of the application code and database structure, they can be shared for interoperability.

You can find out more from:

http://www.mlhim.org

https://github.com/organizations/mlhim

and on YouTube see the two playlists:

Healthcare Modeling Q&A and Healthcare IT Live!

https://www.youtube.com/user/MLHIMdotORG

We are also on Google+ at:

http://gplus.to/MLHIM and http://gplus.to/HealthcareIT

Though the reference model does have a small amount of healthcare semantics (in the Entry children) it can be easily used in any industry.

Any questions, please feel free to ask.

We do have a (not open source) tool to generate CCDs. There is an open source tool on GitHub, that is partially finished just waiting on developers.

On Mon, Sep 30, 2013 at 5:27 AM, Hans-Juergen Rennau <hrennau@yahoo.de> wrote:

Hello everybody,

I am interested in approaches to use XML Schema as a technology for constructing data models, which have a scope exceeding the definition of exchange messages (e.g. web service design). One idea may be to use XML Schema for the construction of a "reference model" to which message structures can be related, and I think this is a basic goal of NIEM. Another idea may be to use XML Schema for creating a conceptual data model to which relational database schemas may be related, offering unambiguous points of reference to which semantics and metadata may be connected. So I wonder, is XML Schema also used for enterprise-scale data modelling?

Much promise seems to be implied by the fact that XML Schema describes tree structures, is firmly based on an elaborate information model (Infoset/XDM) and is clearly related to URIs - which makes it a candidate resource for generating various other resources from it with immaculate reliability.

So I would like to learn about approaches of using XML Schema for data modeling purposes - goals, benefits, limitations, case studies, etc. etc. If anybody has any links, information or thoughts, it would be appreciated.

Thank you very much,
Hans-Juergen

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