Internal subset equivalent in new schema proposals?

[John Cowan]

Paul Prescod scripsit:

> In fact, I'll go so far as to say that it does NOT make sense. SGML goes
> *too far* in this direction: the ID/IDREF mechanism should be treated at a
> separate level, like other integrity constraints.

IMHO the purpose of ID/IDREF is to express non-hierarchical data using
hierarchical notation.  Appropriate use of ID and IDREF attributes
allows the representation of any directed graph, whether acyclic or
cyclic.

-- 
John Cowan					cowan at ccil.org
		e'osai ko sarji la lojban.

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