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The meaning of the "string" datatype?

  • From: "Costello, Roger L." <costello@m...>
  • To: "xml-dev@l..." <xml-dev@l...>
  • Date: Wed, 15 Apr 2009 07:38:56 -0400

The meaning of the "string" datatype?
Hi Folks,

Consider this XML Schema declaration:

   <element name="Author" type="string" />

I want to reconfirm my understanding of what the declaration means:

In an instance document:

    <Author>__________</Author>
                ^
                |
                |
The content of <Author> can be characters from any language - English, Chinese, Arabic, Italian, Greek, German, Spanish, Russian, etc - plus punctuation symbols plus math symbols. If I did my arithmetic correctly [1], the total number of different characters is: 1,112,000.

Furthermore, the length of the content of <Author> is unconstrained: it would be perfectly valid to place a billion characters between the start tag and end tag.

Do you agree?

/Roger

[1] The allowable characters for the string datatype is any character in these hex ranges:

Char    ::=    #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] 


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