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EDOCW '06 Proceedings of the 10th IEEE on International Enterprise Distributed Object Computing Conference Workshops
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ISADS '07 Proceedings of the Eighth International Symposium on Autonomous Decentralized Systems
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QoSA '08 Proceedings of the 4th International Conference on Quality of Software-Architectures: Models and Architectures
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ServiceWave '08 Proceedings of the 1st European Conference on Towards a Service-Based Internet
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TAPP'09 First workshop on on Theory and practice of provenance
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ICWS '09 Proceedings of the 2009 IEEE International Conference on Web Services
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CAiSE'03 Proceedings of the 15th international conference on Advanced information systems engineering
FAST'10 Proceedings of the 8th USENIX conference on File and storage technologies
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As the complexity of online services increases, there is a corresponding need for service-oriented systems to provide support for answering questions about how they have processed and produced data. This need is particularly evident in compositions of services, where audits of each individual service's use do not provide a connected picture of the composition's processing history. The provenance awareness of a system is its ability to answer questions about the history of its processing, through recording provenance data during execution. As the size and usage of a system increases, so can the size of the provenance data recorded, leading to increased demands on storage and decreased performance of the service. However, the exact impact of provenance recording depends on what details of the service execution are being documented. Our goal is to make provenance awareness accessible as an explicit non-functional property (NFP) in composite service specifications, as is common for performance or reliability properties. This would enable composite service designers to analyse the properties of their services to see whether they meet users' requirements based on the provenance questions they could ask about the service's outputs and the dependent performance, storage and other properties. We present a preliminary approach towards this end, focusing on the step of categorising potential provenance questions according to their effect on other NFPs, so that the provenance awareness of a service can be specified as the categories of questions it can answer.