Re: Tree v. Table - A relational XML object model...?
David Megginson wrote: > I do believe that it would be useful to have a middle-level data layer > (say, "XDL") on top of XML. That layer could enforce both restrictions (no > mixed content) and more abstract, data-specific conventions (such as > typing, if it were actually a good idea). Other data oriented specs could > be built on top of it. This seems like the converse of XQuery: i.e., instead of an XML view over a relational database, an application-specific mapping for instantiating the parse of an XML instance to a relational schema. Being application specific, such a layer would be clearly abstracted from the particular XML instances which, upon parsing would be mapped from their native taxonomy of provenance/structure/name to the relational view/table/column. Respectfully, Walter Perry
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