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Peer Data Management System

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Encyclopedia of Database Systems

Synonyms

PDMS; Decentralized data integration system

Definition

A Peer Data Management System (PDMS) is a triple \({\cal S} =\langle {\cal P},{\cal S},{\cal M}\rangle \) where \({\cal P}\) is a set of autonomous peers, \({\cal S}\) a set of heterogeneous schemas used by the peers to represent their data, and \({\cal M}\) 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. Figure 1
figure 1_1233

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Recommended Reading

  1. Arenas M., Kantere V., Kementsietsidis A., Kiringa I., Miller R.J., Mylopoulos J. The hyperion project: from data integration to data coordination. ACM SIGMOD Rec., 32(3):53–58, 2003.

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  2. Cudré-Mauroux P. Emergent Semantics. EPFL Press, 2008.

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  3. Halevy A., Ives Z., Madhavan J., Mork P., Suciu D., Tatarinov I. The piazza peer data management system. IEEE Trans. Knowl. Data Eng., 16(7):787–798, 2004.

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Author information

Authors and Affiliations

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

    Philippe Cudré-Mauroux

Authors
  1. Philippe Cudré-Mauroux
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Editor information

Editors and Affiliations

  1. College of Computing, Georgia Institute of Technology, 266 Ferst Drive, 30332-0765, Atlanta, GA, USA

    LING LIU (Professor) (Professor)

  2. Database Research Group David R. Cheriton School of Computer Science, University of Waterloo, 200 University Avenue West, N2L 3G1, Waterloo, ON, Canada

    M. TAMER ÖZSU (Professor and Director, University Research Chair) (Professor and Director, University Research Chair)

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© 2009 Springer Science+Business Media, LLC

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Cudré-Mauroux, P. (2009). Peer Data Management System. In: LIU, L., ÖZSU, M.T. (eds) Encyclopedia of Database Systems. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-39940-9_1233

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