A declarative control language for dependable XML message queues

We present a novel approach for the implementation of efficient and dependable Web service engines (WSEs). A WSE instance represents a single node in a distributed network of participants that communicate using XML messages. We introduce a fully declarative language custom-tailored to XML message processing that allows to specify business processes in a concise manner. To support the efficient and reliable evaluation of our language, we show how to augment a native, transactional XML data store with efficient and reliable XML message queues.

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