Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Distributed Spatial Databases

  • Panos Kalnis
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_136

Definition

Distributed spatial databases belong to the broad category of distributed database systems. Data reside in more than one sites interconnected by a network, and query processing may involve several sites. A site can be anything from a server to a small mobile device. The broad definition covers many research areas. This entry gives an overview of the following sub-categories: (i) Distributed spatial query processing, which focuses mainly on spatial joins. (ii) Distributed spatial indexes (e.g., a distributed version of the R-tree). (iii) Spatial queries in large distributed systems formed by devices such as PDAs, mobile phones, or even sensor networks.

Historical Background

Similar to relational databases, in spatial databases the most important operator is the spatial join. In relational databases, distributed joins are often implemented by using the semijoin operator. Let R and S be relations residing in two different sites Rsite and Ssite. First Rsite calculates R′ which...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Panos Kalnis
    • 1
  1. 1.National University of SingaporeSingaporeSingapore

Section editors and affiliations

  • Dimitris Papadias
    • 1
  1. 1.Dept. of Computer Science and Eng.Hong Kong Univ. of Science and TechnologyKowloonHong Kong SAR