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Posted to commits@xerces.apache.org by Apache Wiki <wi...@apache.org> on 2007/11/22 18:04:16 UTC

[Xerces Wiki] Update of "XML Schema 1.1 Design Thoughts" by Michael Glavassevich

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The following page has been changed by Michael Glavassevich:
http://wiki.apache.org/xerces/XML_Schema_1%2e1_Design_Thoughts

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+ ## page was renamed from XercesJXMLSchema1.1DesignThoughts
  Overview
  
  XML Schema 1.1 [1][2] specifies a new version of the W3C XML Schema definition language which offers facilities for describing the structure and constraining the contents of XML documents. Among the many changes being introduced in XML Schema 1.1 are improvements to support better versioning of XML languages defined using XML Schemas and a facility for specifying co-occurrence constraints (see sections 3.12 [3] and 3.13 [4] of Structures) using XPath 2.0 expressions. Schema 1.1 also introduces four new built-in datatypes: a new decimal type (precisionDecimal) which retains information about the precision of the value and three others (anyAtomicType, dayTimeDuration and yearMonthDuration) to align with the type system defined for XSLT 2.0 and XQuery 1.0.  A detailed list of changes since XML Schema 1.0 is available here [5] and here [6].

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