patterns and xs:byte
File: Data.xml <?xml version="1.0"?> <data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.java2s.com Schema.xsd" xmlns="http://www.java2s.com" > 15 </data> File: Schema.xsd <?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com" elementFormDefault="qualified"> <xs:element name="data" type="myByte"/> <xs:simpleType name="myByte"> <xs:restriction base="xs:byte"> <xs:pattern value="1" /> <xs:pattern value="5" /> <xs:pattern value="15" /> </xs:restriction> </xs:simpleType> </xs:schema>