NESTREAM: Querying Nested Streams

  title={NESTREAM: Querying Nested Streams},
  author={Damianos Chatziantoniou and Achilleas Anagnostopoulos},
  journal={SIGMOD Record},
This article identifies an interesting class of applications where stream sessions may be organized in a hierarchical fashion - i.e. sessions may contain sub-sessions. For example, log streams from call centers belong to different call sessions and call sessions consist of services' sub-sessions. We may want to monitor statistics and perform accounting at any level on this hierarchy, relative to any other higher level (e.g. monitoring the average service session per call vs. the average service… CONTINUE READING


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