XML Tutorial/XML Schema/totalDigits

Bounds facets to keep values limited to a specific minimum and maximum values, regardless of precision

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru"
  elementFormDefault="qualified">
  <xs:simpleType name="MyType">
    <xs:restriction base="xs:decimal">
      <xs:totalDigits value="9" />
      <xs:fractionDigits value="3" />
      <xs:minInclusive value="0" />
      <xs:maxInclusive value="999999.999" />
    </xs:restriction>
  </xs:simpleType>
  <xs:element name="data" type="MyType"/>
</xs:schema>
By this definition, any of the following would be valid amounts for the MyType data type: 
<data>0</data>
<data>0.01</data>
<data>2345.42</data>
<data>9999.99</data>

totalDigits Defines the maximum number of digits allowable for a datatype derived from decimal

<xsd:element name="money">
  <xsd:simpleConent>
   <xsd:restriction base="xsd:decimal">
    <xsd:totalDigits value="4"/>
    <xsd:fractionDigits value="2"/>
   </xsd:restriction>
  </xsd:simpleContent>
</xsd:element>

totalDigits, fractionDigits

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru"
  elementFormDefault="qualified">
  <xs:simpleType name="MyType">
    <xs:restriction base="xs:decimal">
      <xs:totalDigits value="9" />
      <xs:fractionDigits value="3" />
    </xs:restriction>
  </xs:simpleType>
</xs:schema>