Mega Code Archive
The negativeInteger data type is derived from the nonPositiveInteger type
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The value space is the infinite set of integer values less than or equal to –1.
The lexical space is a finite-length sequence of decimal digits preceded by a -.
<!-- schema -->
<xsd:simpleType name="myType">
<xsd:restriction base="xsd:negativeInteger">
<xsd:pattern value="-\d{2}"/>
</xsd:restriction>
</xsd:simpleType>
<!-- instance document -->
<myType>-49</myType>
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