The Extensible Markup Language is changing the way that information is being stored and exchanged. It is also changing the very way that we think about data. XML Unleashed! allows the reader to unlock this new power and get well on the way towards developing XML applications and systems that enable their most important business processes, or the simplest visions for data representation and exchangeThis book covers all the necessary topics from the basics of Document Type Definitions (DTDs) to the more advanced topics in XML database integration and the semantic web. This book is designed to be the only XML book that the reader will ever need on their shelf.