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for each tag in a namespace, is there easy way to get documentation on
what's that tag use for?

for Java, we have Java Doc, but for XML, do we usually refer to schema
file for the XML?

like XMLSchema name space, it has all the tags like
<xs:sequence>
<xs:element>
<xs:annotation>

where can I get more info for each tag?

===============
<xs:schema xmlnss="http://www.w3.org/2001/XMLSchema"
xmlns:sql="urn:schemas-microsoft-com:mapping-schema">

Carmen Sei wrote:

> like XMLSchema name space, it has all the tags like
> <xs:sequence>
> <xs:element>
> <xs:annotation>
>
> where can I get more info for each tag?
>
> ===============
> <xs:schema xmlnss="http://www.w3.org/2001/XMLSchema"
> xmlns:sql="urn:schemas-microsoft-com:mapping-schema">

It is a W3C recommendation, see <URL:http://www.w3.org/TR/xmlschema-0/>
for an informal introduction and <URL:http://www.w3.org/TR/xmlschema-1/>
and <URL:http://www.w3.org/TR/xmlschema-2/> for the formal specification.

--

Martin Honnen
http://JavaScript.FAQTs.com/

Carmen Sei wrote:
> for each tag in a namespace, is there easy way to get documentation on
> what's that tag use for?

Sometimes.

> for Java, we have Java Doc, but for XML, do we usually refer to schema
> file for the XML?

Unfortunately, that's sometimes all there is.
Or a DTD.
Or the owner's or creator's web site (eg www.docbook.org is an excellent
source of documentation about DocBook). Some industrial Schemas are
proprietary, so you have to be a member (or pay) to get the doc.
Or buy a book...

There have been at least a dozen proposals over the years for methods of
embedding documentation in Schemas and DTDs, mostly in an extractable
format, rather like Knuth's Literate Programming _WEB_, so as to
generate XML documentation, but:

a) none of them have taken off

b) programmers don't write documentation

c) document engineers do, but not usually in the Schema/DTD

d) no-one can agree on how to do it right

The most successful one IMHO is ODD, used to generate grammars and some
documentation for the TEI (www.tei-c.org).

> like XMLSchema name space, it has all the tags like
> <xs:sequence>
> <xs:element>
> <xs:annotation>
>
> where can I get more info for each tag?

This is all documented in the XML Schema Specification at
http://www.w3.org/XML/Schema

> <xs:schema xmlnss="http://www.w3.org/2001/XMLSchema"
> xmlns:sql="urn:schemas-microsoft-com:mapping-schema">

For Microsoft Schemas, ask Microsoft.

///Peter
--
XML FAQ: http://xml.silmaril.ie/