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   RE: Defining SOAP Interfaces and web interface metadata.

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  • From: "Ashvil" <ashvil@i3connect.net>
  • To: "xmldev" <xml-dev@xml.org>
  • Date: Mon, 12 Jun 2000 17:33:11 -0700

David wrote:
> In Defining SOAP interfaces, Edd Dumbill writes
>  http://weblogs.oreillynet.com/edd/discuss/msgReader$77 ):
> >Since the SOAP 1.1 specification was released there have been three
> alternative proposals
> >for languages to describe the interfaces that a SOAP
> ...
> Does anyone have URL's for info about these?

The only way that I know for the Microsoft spec. is to download the
SOAP toolkit

Open it using Winzip or pkzip to extract SDL.doc. Whew!

Abstract from SDL.doc
The Service Description Language (SDL) provides an XML-based grammar
for describing the capabilities of Web Services. SDL is designed to be
extensible, and consequently places few requirements on what must be
in a service description document. In particular, it provides an
extensible mechanism for defining the protocol group used to
communicate with the service (e.g., SOAP, HTTP-GET, and HTTP
FORM-POST), the schema(s) to be used with the service. This document
describes the grammar of SDL how to use it with SOAP, HTTP-GET, and

> This could not be limited to RPC calls but to standard
> cgi's as well (hence
> posting here). A universal standard for the XML returned
> from a getMethods()
> method based on RDF would surely make sense?

I agree on the need for a universal standard that could cover CGIs,
xml-rpc and SOAP. The SDL spec. seems to cover CGIs and SOAP.

I am not sure why the standard needs to be based on RDF a format that
1. Not many understand
2. Except the Netscape Channel format, I could not find any other real
world examples.

Our experience with IDLs (CORBA, COM, etc.) should be the starting


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