XML Tutorial/XML Schema/positiveInteger

The positiveInteger datatype is derived from the nonNegativeInteger type.

   <source lang="xml">

The value space is the infinite set of integers greater than or equal to 1. The lexical space is a finite-length sequence of decimal digits with an optional leading +.

<xsd:complexType name="record_sets">

 <xsd:sequence>
  <xsd:element name="record" minOccurs="0"
   maxOccurs="unbounded">
   <xsd:simpleType>
    <xsd:restriction base="xsd:positiveInteger">
     <xsd:pattern value="555\d{3}"/>
    </xsd:restriction>
   </xsd:simpleType>
  </xsd:element>
 </xsd:sequence>

</xsd:complexType>

<record>555158</record> <record>555687</record> <record>555736</record></source>

Use positiveInteger

   <source lang="xml">

File: Schema.xml <?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:element name="population" type="xs:positiveInteger" />

</xs:schema>

File: Data.xml <?xml version="1.0"?> <population xmlns="http://www.wbex.ru">342</population></source>