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Peer Data Management System

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Encyclopedia of Database Systems

Synonyms

Decentralized data integration system; PDMS

Definition

A Peer Data Management System (PDMS) is a triple S = 〈P, S, M〉 where P is a set of autonomous peers, S a set of heterogeneous schemas used by the peers to represent their data, and M a set of schema mappings, each enabling the reformulation of queries between a given pair of schemas.

Key Points

A Peer Data Management System (PDMS) is a distributed data integration system providing transparent access to heterogeneous databases without resorting to a centralized logical schema. Instead of imposing a uniform query interface over a mediated schema, PDMSs let the peers define their own schemas and allow for the reformulation of queries through mappings relating pairs of schemas (see Fig. 1). PDMSs typically exploit the schema mappings transitively in order to retrieve results from the entire network.

Peer Data Management System, Fig. 1
figure 1620 figure 1620

Contrary to the mediated architecture (a), Peer Data Management Systems (b) do not impose...

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Recommended Reading

  1. Arenas M, Kantere V, Kementsietsidis A, Kiringa I, Miller RJ, Mylopoulos J. The hyperion project: from data integration to data coordination. ACM SIGMOD Rec. 2003;32(3):53–8.

    Article  Google Scholar 

  2. Cudré-Mauroux P. Emergent semantics. EPFL Press; 2008.

    Google Scholar 

  3. Halevy A, Ives Z, Madhavan J, Mork P, Suciu D, Tatarinov I. The piazza peer data management system. IEEE Trans Knowl Data Eng. 2004;16(7): 787–98.

    Article  Google Scholar 

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Author information

Authors and Affiliations

  1. Massachusetts Institute of Technology, Cambridge, MA, USA

    Philippe Cudré-Mauroux

Authors
  1. Philippe Cudré-Mauroux
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Corresponding author

Correspondence to Philippe Cudré-Mauroux .

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. Distributed Inf. Sys Lab., Inst. for Core Computing Science (IIF), EPFL-IC-IIF-LSIR, Lausanne, Switzerland

    Karl Aberer

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Cudré-Mauroux, P. (2018). Peer Data Management System. 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_1233

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