This course aims at defining and understanding the eXtensible Markup Language (XML) and designing XML applications. Laboratory sessions include usage of SAX and DOM in dynamic manipulation as well as writing WML (WAP) pages for mobile devices. At the end of IT 523, the students should be able to write XML and understand its implications on e-commerce. Topics include XML Documents; Database Publishing with XML; XML Standards; XML Style Language; Unicode Standard; Document Object Model; Standard Generalized Markup Language; DTD's; Scripting and XML; XML Schemas; SAX2; Styling XML; Interfacing XML with Databases using ASP; E-commerce; WAP and XML.