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Visual Query Languages for Data Stream

  • Reference work entry
  • First Online:
Encyclopedia of Database Systems

  • 31 Accesses

Synonyms

Visual query language (VQL); Visual query system (VQS)

Definition

A particular type of visual query language specifically targeted for data stream processing. As the classical visual query languages, it provides a language, consisting of a set of visual constructs, to express, in a visual format, queries on data transmitted in a continuous and unbounded fashion (i.e., data streams). It is important to note that this class of languages can be seen as an extension of the generic visual query languages (for further details, consult the entry on the encyclopedia), due to the fact that they can query, in a visual manner and using the same criteria of classical VQLs, both data streams and classical relational databases. They are oriented to a wide spectrum of users, even those ones who have some knowledge about concepts related to data streaming but with no skills in developing code.

Historical Background

The importance of data streams in the information technology field is...

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Recommended Reading

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Author information

Authors and Affiliations

  1. Dipartimento di Ingegneria Informatica, Automatica e Gestionale “A.Ruberti”, Sapienza – Università di Roma, Rome, Italy

    Tiziana Catarci & Mariano Leva

  2. University of Padua, Padua, Italy

    Massimo Mecella

Authors
  1. Tiziana Catarci
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  2. Mariano Leva
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  3. Massimo Mecella
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Corresponding author

Correspondence to Tiziana Catarci .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Dept. di Ingegneria Informatica, Automatica e Gestionale, Universita di Roma, Rome, 185, Italy

    Tiziana Catarci

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Catarci, T., Leva, M., Mecella, M. (2018). Visual Query Languages for Data Stream. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_80666

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