XML(eXtensible Markup Language n Cross-platform Browser, PDA, Phone, a Semantic XML: semantic XML Schema: syntax <Person> <complexType name="Person"> <Name> <sequence> <First>David</First> <complexType name="Name"> <Last> crowders/last> <sequence> </Name> <element name="First"type="string <Age>49</Age> minoccurs="0"maxOccurs="unbounded"/> </Person> <element name="Last"type="string"/> </sequence> </complexType> <element name="Age"type="string/> </sequence> </complexType>XML (eXtensible Markup Language) ‡ Cross-platform: Browser, PDA, Phone, … ‡ Semantic XML: semantic <Person> <Name> <First>David</First> <Last>Crowder</Last> </Name> <Age>49</Age> </Person> XML Schema: syntax <complexType name="Person"> <sequence> <complexType name="Name"> <sequence> <element name="First" type="string" minOccurs="0" maxOccurs="unbounded"/> <element name="Last" type="string"/> </sequence> </complexType> <element name="Age" type="string"/> </sequence> </complexType>