[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Using schemas with XML parser

• From: David Megginson <ak117@f...>
• To: "'xml-dev@i...'" <xml-dev@i...>
• Date: Sun, 3 May 1998 13:34:18 -0400

Zehavi, Gil writes:

 > I wrote xml-data schema and instances that are based on that
 > schema, but I don't know how to combine them in order that the
 > parser (i'm using the Microsoft parser which is supposed to know
 > how to deal with schemas) will recognize that a schema is being
 > used. Putting both the schema and the instances in one files is not
 > good since the parser recognizes only one root. I don't know how to
 > link the two parts if they are defined in different files (my
 > application is not a web application). I can use DTD but the use of
 > schemas is very useful in my case.  I would appreciate any
 > information I can get.

You can have the best of both worlds: define your document type using
any high-level schema language (it doesn't have to be XML-Data), then
compile the schema into a standard XML 1.0 DTD for parsing or
distribution.  When you make any changes, make them to the high-level
original rather than to the DTD, then recompile.

This way, you can enjoy any advantages that the higher-level schema
language offers, but you are still interoperable with conformant XML
tools.  You also have the advantage of being able to choose (or
invent) any schema language.

I can imagine specialised fields inventing their own abstract (and
much simpler) schema languages that deal with only a few high-level,
domain-specific units (like tasks or forms or financial tables) rather
than low-level elements and attributes.  XML-Data will undoubtedly
satisfy some needs, there is probably not a one-size-fits-all solution
to schemas.

Has anyone written a compiler for XML-Data yet?


All the best,


David

-- 
David Megginson                 ak117@f...
Microstar Software Ltd.         dmeggins@m...
      http://home.sprynet.com/sprynet/dmeggins/

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)

• Follow-Ups:
  • Re: Using schemas with XML parser
    • From: Paul Prescod <papresco@t...>

• References:
  • Using schemas with XML parser
    • From: "Zehavi, Gil" <Gil_Zehavi@i...>

• Prev by Date: Parents and children (was RFD: comp.text.xml)
• Next by Date: Re: Announcement: SAX 1.0gamma
• Previous by thread: Using schemas with XML parser
• Next by thread: Re: Using schemas with XML parser
• Index(es):
  • Date
  • Thread