http://schemas.microsoft.com/2003/10/Serialization/
guid Simple Type
http://schemas.microsoft.com/2003/10/Serialization/ : guid Simple Type
Namespace http://schemas.microsoft.com/2003/10/Serialization/
Type
Restriction of xs:string
Diagram
guid Simple Type
Overview
guid Restriction of xs:string
Facets
Pattern[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}
Source
<xs:simpleType name="guid" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:restriction base="xs:string">
    <xs:pattern value="[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}" />
  </xs:restriction>
</xs:simpleType>
See Also
http://schemas.microsoft.com/2003/10/Serialization/