A Declarative Approach to Services

XForms is a recent technology from W3C. It arises from a redesign of HTML Forms, but despite that history, and its name, it can in fact do much more than just forms. Since it has a memory model, input, output and a calculation engine it is a declarative calculation engine, with direct access to documents and services over the network, making it ideally suited for service-oriented processing. This talk will introduce XForms and its architecture, show its applicability to services, demonstrate XForms in action, and discuss the effect on productivity that declarative approaches have compared with procedural approaches.