Encyclopedia of Database Systems

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

Peer Data Management System

  • Philippe Cudré-Mauroux
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1233

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.
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Recommended Reading

  1. 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.CrossRefGoogle Scholar
  2. 2.
    Cudré-Mauroux P. Emergent semantics. EPFL Press; 2008.Google Scholar
  3. 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.CrossRefGoogle Scholar

Copyright information

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

Authors and Affiliations

  1. 1.Massachusetts Institute of TechnologyCambridgeUSA

Section editors and affiliations

  • Karl Aberer
    • 1
  1. 1.Distributed Inf. Sys Lab.Inst. for Core Computing Science (IIF), EPFL-IC-IIF-LSIRLausanneSwitzerland