DataSet ReadXmlSchema ignoring precision and scale

Question

I have a very simple XML schema I am trying to read into DataSet. When I read the schema file, the DataSet ignores the totalDigits and fractionalDigits restrictions. The string's max length restriction is respected, but I can't get it to acknowledge the decimal restrictions. Here is the xsd file:

<?xml version="1.0" standalone="yes"?>
<xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema"&gt;
   <xs:element name="NewDataSet" >
     <xs:complexType>
       <xs:choice minOccurs="0" maxOccurs="unbounded">        
         <xs:element name="Sample">
           <xs:complexType>
             <xs:sequence>
               <xs:element name="Name" minOccurs="1" >
                 <xs:simpleType>
                    <xs:restriction base="xs:string">
                       <xs:maxLength value="32" />
                    </xs:restriction>
                 </xs:simpleType>
               </xs:element>
               <xs:element name="Latitude" minOccurs="1">
                 <xs:simpleType>
                   <xs:restriction base="xs:decimal">
                     <xs:totalDigits value="15" />
                     <xs:fractionDigits value="8" />
                   </xs:restriction>
                 </xs:simpleType>
               </xs:element>
             </xs:sequence>
           </xs:complexType>
         </xs:element>
       </xs:choice>
     </xs:complexType>
  </xs:element>
 </xs:schema>

And here is some quick and dirty sample code that reads the schema and outputs the relevant fields.

DataSet ds = new DataSet();
ds.ReadXmlSchema( @"C:\sample.xsd" );

var rows = ds.CreateDataReader().GetSchemaTable().AsEnumerable();

foreach(var row in rows)
{ 
    string colName = row.Field<string>("ColumnName");
    Type type = row.Field<Type>("DataType");
    object size = row["ColumnSize"];
    object precision = row["NumericPrecision"];
    object scale = row["NumericScale"];

    Console.WriteLine(String.Format("{0}: {1} <{2}> <{3}> <{4}>", 
            colName,
            type,
            size,
            precision,
            scale));
}

Finally, here is the output:

Name: String <32> <> <>

Latitude: Decimal <-1> <> <>

How can I properly specify the decimal's precision and scale?