Re: An XML document is an information resource (series ofoctet

From: Rick Jelliffe <rjelliffe@allette.com.au>
To: Thomas Passin <list1@tompassin.net>
Date: Fri, 5 Apr 2024 15:12:28 +1100

Play the video

The RFC 7303 is quite careful about using "document": what is being transmitted is indeed entities.

It says:

````

   document entities:  The media types application/xml or text/xml, or a
      more specific media type (see Section 9.6), SHOULD be used.

   external DTD subsets:  The media type application/xml-dtd SHOULD be
      used.  The media types application/xml and text/xml MUST NOT be
      used.

   external parsed entities:  The media types application/xml-external-
      parsed-entity or text/xml-external-parsed-entity SHOULD be used.
      The media types application/xml and text/xml MUST NOT be used
      unless the parsed entities are also well-formed "document
      entities"

   external parameter entities:  The media type application/xml-dtd
      SHOULD be used.  The media types application/xml and text/xml MUST
      NOT be used.
````

Regards

Rick

On Tue, Jun 20, 2023 at 11:15 PM Thomas Passin <list1@tompassin.net> wrote:

On 6/20/2023 8:36 AM, Roger L Costello wrote:
> Hi Folks,
>
> This document [1] defines JSON documents this way:
>
> A JSON document is an information resource (series of octets) described by the application/json media type.
>
> Would it be correct to define XML documents in an analogous way:
>
> An XML document is an information resource (series of octets) described by the application/xml media type.

XML documents don't always have (and shouldn't always have, IMO) the
application/xml media type. And an XML document is (by the XML
Recommendation) "composed of units called entities." Since some of
those entities may be included by reference, an XML document may be more
than the collection of octets that compose it.

> Two More Questions:
>
> 1. What is an "information resource"?
>
> 2. The parenthetical remark seems to imply that an information resource is a "series of octets". Is an information resource a series of octets?
>
> /Roger
>
> [1] https://json-schema.org/draft/2020-12/json-schema-core.html#name-json-document
>
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