The development of connected mobile applications for a broad audience is a complex task due to the existing device diversity. In order to soothe this situation, device-independent approaches are aimed at implementing platform-independent applications, hiding the differences among the diverse families and models of mobile devices. Most of the existing approaches are based on the imperative definition of applications, which are either compiled to a native application, or executed in a Web browser. The client and server sides of applications are implemented separately, using different mechanisms for data synchronization. In this paper we propose DIMAG, a framework for defining native device-independent client-server applications based on the declarative specification of application workflow, state and data synchronization, user interface, and data queries. We have designed DIMAG considering the dynamic addition of new types of devices, and facilitating the generation of applications for new target platforms. DIMAG has been implemented taking advantage of existing standards.

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