Optimized query planning of continuous aggregation queries in dynamic data dissemination networks

@inproceedings{Gupta2007OptimizedQP,
  title={Optimized query planning of continuous aggregation queries in dynamic data dissemination networks},
  author={Rajeev Gupta and Krithi Ramamritham},
  booktitle={WWW},
  year={2007}
}
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some aggregation function over distributed data items, for example, to know (a) the average of temperatures sensed by a set of sensors (b) the value of index of mid-cap stocks. In these queries a client specifies a coherency requirement as part of the query. In this paper we present a low-cost, scalable technique to answer… CONTINUE READING
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