Namespace prefixes in attribute declarations
cowan at locke.ccil.org
Mon Feb 1 15:51:21 GMT 1999
Ronald Bourret wrote:
> <!ATTLIST a:my_element
> a:my_attribute CDATA #IMPLIED>
> What does it mean and why is the prefix legal for the attribute? DTDs have
> no way to declare global attributes [...]
Sure they do. There's just no way to declare them once and for all:
the declaration must be repeated for every element, as here.
Remember that "global attribute" does not mean "universally applicable
attribute" but rather "attribute with (by convention) a universal
> The only thing I can think of is so global attributes can be declared in
> and validated against XML 1.0 DTDs by declaring them on each element.
Just so. One might have a global attribute such as "iso4217:currency"
that is applicable only to a few attributes in a particular DTD,
those which represent money amounts. But its meaning would be
universal: an ISO 4217 currency code.
John Cowan http://www.ccil.org/~cowan cowan at ccil.org
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
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