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      A real-time concurrency control protocol for main-memory database systems

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      Author
      Ulusoy, Özgür
      Buchmann, A.
      Date
      1998
      Source Title
      Information Systems
      Print ISSN
      0306-4379
      Electronic ISSN
      1873-6076
      Publisher
      Elsevier
      Volume
      23
      Issue
      2
      Pages
      109 - 125
      Language
      English
      Type
      Article
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      Abstract
      Protocols developed so far for concurrency control in real-time database systems have assumed a dynamic acquisition of data resources as it is impossible to predict which instances of relations will actually be accessed by each transaction. In this paper double dagger, we present a new concurrency control protocol for main-memory real-time database systems, which is based on predeclaration of data requirements at a relation granularity. When a transaction is submitted, it is possible to detect with simple syntactical means which relations will be accessed by the transaction. Preacquisition of data resources enables the system to execute transactions in a conflict-free manner. The protocol also offers the possibility of determining execution times without the effects of blocking and I/O, thereby allowing us to give guarantees for the execution of high-priority transactions. Through a series of simulation experiments, the protocol is compared against some typical concurrency control protocols proposed recently for real-time database systems. (C) 1998 Elsevier Science Ltd. All rights reserved.
      Keywords
      Real-Time Database Systems
      Main-Memory Database Systems
      Concurrency Control
      Permalink
      http://hdl.handle.net/11693/11073
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/S0306-4379(98)00004-0
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