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NoSQL Stores

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Encyclopedia of Database Systems

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Definition

NoSQL (originally referring to “non SQL”) is a new type of data management system, which, different from the conventional database systems, does not model its data using the relational tabular model. To provide a highly scalable and available data access service, NoSQL systems may adopt various data models (e.g., key-value, graph, and document) based on the applications that they are designed for. The flexibility of NoSQL’s data model makes it easier to scale to a large cluster. However, on the other hand, most NoSQL systems compromise the consistency for the scalability and availability (CAP theorem says we can only keep two features among consistency, availability, and partition tolerance). Many of them adopt the multi-version strategy and the eventual consistency model.

Applications can use the specific APIs (e.g., key based and vertex based) provided by the NoSQL system to access the data. Standard SQL is not supported, since most NoSQL systems are not designed to...

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Recommended Reading

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Author information

Authors and Affiliations

  1. Zhejiang University, Hangzhou, Zhejiang, People’s Republic of China

    Sai Wu

Authors
  1. Sai Wu
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Correspondence to Sai Wu .

Editor information

Editors and Affiliations

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

    Ling Liu

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

    M. Tamer Özsu

Section Editor information

  1. College of Computing, Georgia Institute of Technology, 801 Atlantic Dr., 30332-0280, Atlanta, GA, USA

    Ling Liu

  2. Cheriton School of Computer Science, University of Waterloo, N2L 3G1, Waterloo, ON, Canada

    M. Tamer Özsu

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Wu, S. (2017). NoSQL Stores. In: Liu, L., Özsu, M. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4899-7993-3_80801-1

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  • DOI: https://doi.org/10.1007/978-1-4899-7993-3_80801-1

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4899-7993-3

  • Online ISBN: 978-1-4899-7993-3

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