In addition to the string and other primitive types defined by the XML 1.0 recommendation, the Microsoft XML Parser supports a rich set of additional data types. It also supports conversions between the primitive types and these rich data types.
Data types are referenced from the data type namespace "urn:schemas-microsoft-com:datatypes". To use data types within an XML Schema, declare the data type namespace within the schema document. This documentation assumes that the data type namespace has been assigned the "dt" prefix. For example:
<Schema name="myschema" xmlns="urn:schemas-microsoft-com:xml-data" xmlns:dt="urn:schemas-microsoft-com:datatypes"> <!-- ... --> </Schema>
XML Data Types | Primitive XML Data Types | Supported Data Type Conversions | XML Schema Developer's Guide | XML Schema Reference