Applied XML Programming for Microsoft .NET.pdf - Csbdu.in

xsi:noNamespaceSchemaLocation="address.xsd"country="Italy">One Microsoft Way1RedmondWA98052The schema can be tied to a namespace by using the schemaLocation attribute, asshown here:One Microsoft Way1RedmondWA98052In this case, the XSD (address1.xsd) must be slightly modified by adding atargetNamespace attribute and setting an xmlns attribute to the target namespace URI,as follows:Needless to say, the target namespace must match the designated namespace URI inthe source document.Complex Type InheritanceWith complex types, you simply define XML data structures that are in no logical waydifferent from classes of object-oriented languages such as C# or Java. One keyfeature of those languages is the ability to derive new data types from existing classes.The same kind of inheritance can be achieved with XML schemas. To demonstrate,we'll build a new address type that, as in many European countries, takes into accountalso the province.The address.xsd schema considered up to now contains more than just the definition ofa complex type—it also contains a global element that will be included in any compliantdocument as an instance of the type. Let's first create a base class for the schema andname it xaddress.xsd, as shown in the following code. The new file differs from theearlier version in only one aspect: it now lacks the global element declaration.93