Research Project :: QStream
QStream - Quality Constraints for Processing Data StreamsEffectively analyzing data streams coming from multiple sensors is one of the most critical issues in dealing with sensor data. In general, streaming systems apply filters, aggregators, and possibly joins to multiple data streams. Unfortunately all currently known streaming systems are based on the best-effort principle, i.e. they try to adapt the given Quality-of-Service parameters such as result precision and latency to the actual load of the system.
QStream provides a framework for considering Quality-of-Service requirements referring to the relationship of data stream quality, delay of the result, and the necessary resource consumption. The proposed data stream processing model comprises of stream operators annotated by non-functional properties and operator graphs with buffers to compensate jitter from the original data stream or irregularity of stream operators' execution time. For a short introduction to the QStream project follow this slides.
VLDB 2004 Demo
Last Update: August 29, 2011 03:09 UTC
Author Database Technology Group, Technische Universität Dresden
Tel.: +49 351 463-38383
Fax: +49 351 463-38259
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Nöthnitzer Str. 46
Technische Universität Dresden
Dep. of Computer Science
Institute for System Architecture
Database Technology Group