Offering a unique approach to learning XML, this book walks readers through the process of building a complete, functional, end-to-end XML solution Featured case study is an online business product catalog that includes reports, data input/output, workflow, stylesheet formatting, RSS feeds, and integration with external services like Google, eBay, and Amazon The format of presenting a problem and working through the design to come up with a solution enables readers to understand how XML markup allows a business to share data across applications internally or with partners or customers even though they might not use the same applications.