XML Databases, coupled with the power of XQuery, offer a potentially paradigm-changing way of dealing with data. The Oracle Berkeley DB XML database provides a rich XQuery-based engine that can be manipulated via XQuery, opening up possibilities for any web

Kurt Cagle introduces us to E4X, an XML library for JavaScript, and argues that XML and JSON are both indispensable parts of the web app developer's toolkit.

Kyle Gabhart describes WS02's Data Services, a new feature in WS02 that allows for rapid creation of web services wrapping relational, Excel, CSV, and JNDI data sources quickly and easily.

Jack Cox explains an approach to building XForms client applications that work in a disconnected environment.

Uche Ogbuji returns with a new Agile Web column to explain how to use jQuery to process XML in JavaScript web applications.

In the golden days, XML parser performance was a perpetually hot topic. And today it's still worth knowing which modern parsers offer the best performance. In this first of a two-part series, event-based parsers are compared; in the next part,

Kyle Gabhart returns with another look at part of the growing support for web services and SOA in Apache, this time focusing on secure messaging.

Marc de Graauw follows up David Orchard's recent piece about versioning XML vocabularies with a piece about the Capability Compatibility Design Pattern, including code for achieving forward and backward compatibility between XML vocabulary revisions.

In the golden days, XML parser performance was a perpetually hot topic. And today it's still worth knowing which modern parsers offer the best performance. In this second of a two-part series, object parsers are compared.

Michael Day asks an interesting question: which XML technologies are beautiful and why? He answers with some candidates. Which XML technologies do you think are most beautiful?

Kurt Cagle offers an interesting perspective on the future utility of XQuery as a server-side development language.

Ben Martin returns with another look at his fascinating system, libferris, which turns everything into a filesystem, that is, a hierarchical data store. This time Ben shows us how to use XQuery with libferris as a kind of universal data

Kurt Cagle describes ROX Server, a RESTful system for building XForms from an XML Schema and some other bits.

Brian Suda explains how to handle hCard, the vCard microformat embedded in HTML.

Uche Ogbuji's Agile Web column returns with an introduction to OpenSearch, an Atom-friendly format for describing and discovering search engines and query endpoints on the Web in a RESTful way.

In his most recent column Kurt Cagle explains the utility of XQuery for increased data abstraction and why XQuery is XPath plus some useful missing bits.

Jason Levitt describes the newly burgeoning field of web authentication APIs, including Yahoo's BBAuth and Google's AuthSub.

In the area of technical publishing, there are still challenges to be faced when creating large, complex documents using XML. This week Jim Elliott and Marc Loy provide an excellent introduction to XMLMind, an XML editing environment optimized for complex

In his most recent column Kurt Cagle explains the utility of XQuery for increased data abstraction and why XQuery is XPath plus some useful missing bits.

Web service orchestration is an important part of web services and service oriented architecture. Gimzewski and Fancellu argue that XQuery is especially well-suited as an implementation language for service orchestrator components.