Guid Simple Type (DeploymentManifest)
Applies to: SharePoint Foundation 2010
Supports the use of globally unique identifiers (GUIDs) as attribute field values in elements and types of the DeploymentManifest Schema. The attribute provides a GUID of the specified item.
<xs:simpleType name="Guid">
<xs:restriction base="xs:string">
</xs:restriction>
</xs:simpleType>