Define a complexType
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" > <speed> 123 </speed> </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="myType"/> <xs:complexType name="myType"> <xs:sequence> <xs:element name="speed" type="xs:string"/> </xs:sequence> </xs:complexType> </xs:schema>