Data Oriented and Document Oriented Defintions

I was wondering if there was a "good" definition of both data 
"record-like" and document oriented "narrative" XML which is either 
widely accepted, or otherwise published in the academic literature.

I have been unable to find a usable definition, and wondered if one was 
known to those on this list. Has anyone gone through the features of XML 
1.0 and attempted to partition them into data|doc|both? Or does it seem 
more likely that the split occurs in how the various features are used, 
as opposed to what features?

Apologies for possibly awakening a permathread.

Thanks
George Russell