[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Object Role Modelling (ORM) or UML or ?? for designing Schemas
> "... My guess is that the syntax-centric > stranglehold will not be broken until there's a conscious focus > on conceptual modeling, accompanied by an unspoken agreement > that XML schemas and other markup syntaxes can readily be > generated from conceptual model notations..." > > but the comment appeared to have fallen on deaf ears. My sense is quite a few developers are on the same wavelength. The first time someone asked me about this was 1999. My reply was we'd "soon" be using design tools that enable us to work at a high level of abstraction -- create a conceptual model and then select whether to generate an SQL schema or XML schema. That prediction was wrong by about 2-3 years, but it was based in part on the Schema WG predicting a spec by December 1999. Conceptual model -> XML Schema is not a quantum leap in technology. It follows the natural evolution of existing technologies and tools. Matt Fuchs was the primary author of a paper about UML -> SOX schema in 1999. Since 1994, there have been tools (InfoDesigner/InfoModeler/VisioModeler) capable of transforming an ORM conceptual model to generate an SQL Schema. You define objects, roles, constraints, and facts (graphically or verbally)-- the tool emits CREATE TABLE, CREATE TRIGGER. Not too difficult to foresee modeling the same objects, roles, and constraints, and emitting <type>. There is clearly an advantage to using the same model to generate XML and database schemas. However, people sometimes have to work in a manual syntax-editing mode before they appreciate the productivity of tools.
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