SOAP and DTDs

• To: "John Caron" <caron@xxxxxxxxxxxxxxxx>; <thredds@xxxxxxxxxxxxxxxx>
• Subject: SOAP and DTDs
• From: "Joe Wielgosz" <joew@xxxxxxxxxxxxx>
• Date: Mon, 3 Jun 2002 14:12:56 -0600

----- Original Message -----
Sent: Monday, June 03, 2002 1:05 PM


> Hi John,
>
> Something interesting I just came across in "Building Web Services with
> Java":
>
> "Simple Object Access Protocol (SOAP) ... explicitly forbids the use of
> DTDs for defining document structure"
>
> They also say that
>
> "data-oriented XML applications have moved away from DTDs; these
> applications use another mechanism to validate XML documents and to
> enforce document structure and datatype rules. To address the problems
> inherent in DTDs, the XML community developed XML Schema.."
>
> Something to consider for THREDDS catalogs..
>
> - Joe

thanks for the info, i didnt realize about the "explicit forbid".

We have been closely following XML Schema, and expect to eventually use it
instead of DTDs. SOAP looks like a likely winner for delivering services,
and we may prototype something in it soon.

• References:
  • SOAP and DTDs
    • From: Joe Wielgosz