XML Tutorial/XML Schema/negativeInteger

The negativeInteger data type is derived from the nonPositiveInteger type.

   <source lang="xml">

The value space is the infinite set of integer values less than or equal to ? The lexical space is a finite-length sequence of decimal digits preceded by a -.

<xsd:simpleType name="myType">

 <xsd:restriction base="xsd:negativeInteger">
  <xsd:pattern value="-\d{2}"/>
 </xsd:restriction>

</xsd:simpleType>

<myType>-49</myType></source>