Part of the Advances in Database Systems book series (ADBS, volume 36)

Informally, a data stream is defined as an unbounded (or never-ending) sequence of data items that are usually ordered either explicitly by a timestamp or by the values of one or more data elements (e.g., packet sequence identifier in an IP session). It is assumed that the format of a data stream is known in terms of its data elements and their types. Simplistically, a data item of a data stream can be viewed as a tuple1 of a relation. Correspondingly, a data element of a data item is analogous to an attribute of a relation.


Data Stream Data Item Query Plan Continuous Query Complex Event Processing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag US 2009

Authors and Affiliations

  1. 1.Department of Computer Science & EngineeringUniversity of Texas at ArlingtonArlingtonUSA
  2. 2.Oracle CorporationRedwood ShoresUSA

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