Specifies the data type for the ElementType or AttributeType element.
<datatype dt:type="datatype">
<ElementType name="colors"> <datatype dt:type="char"/> </ElementType>
| Number of occurrences | One time. | 
| Parent elements | AttributeType, ElementType | 
| Child elements | (No child elements.) | 
The datatype functionality is an extension offered by XML-Data Reduced (XDR) schema that cannot be specified using the document type definition (DTD) syntax.
XDR Schema Elements | XDR Schema Data Types Reference