[SCL] equivalence of SCL, GXL, RDF, RDF/XML, and XML?

[Rich Morin]

The Extended Metadata Registry (XMDR) Project

   http://hpcrd.lbl.gov/SDM/XMDR/

seems to be relevant to my question.  It includes a relatively
current (10/2004) rundown of DBMSs and related technologies:

   http://hpcrd.lbl.gov/SDM/XMDR/tech/

-r
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