In this course students will learn to use XML for creating and managing data sources. The module introduces the basic principles of XML; demonstrates its growing importance in business-to-business transactions; provides hands-on practice in creating XML data sources; shows how to create new tags and parse XML on a web client; shows the relationship between an XML document and a DTD Document Type Definition; explains the concept of schema; creates an XSL style sheet and demonstrates how to integrate XML with XHTML in order to display and manipulate data on the web.