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      Reusability and schema evolution in object - oriented query models

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      Author
      Polat, F.
      Alhajj, R.
      Date
      1996
      Source Title
      American Society of Mechanical Engineers, Petroleum Division (Publication) PD
      Publisher
      ASME, New York, NY, United States
      Volume
      74
      Issue
      2
      Pages
      21 - 29
      Language
      English
      Type
      Conference Paper
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      Abstract
      In this paper, we have benefited from having an object algebra maintaining closure that makes it possible to have the output from a query persistent in the hierarchy. Based on this, it is possible to maximize reusability in object-oriented databases. Furthermore, we show how the object algebra is utilized to handle basic schema evolution functions without requiring any special set of built-in functions to serve the purpose. The invariants and the conflict resolving rules are specified. It is also shown how other schema functions are derivable from the basic ones.
      Keywords
      Algebra
      Data processing
      Database systems
      Hierarchical systems
      Object oriented programming
      Query languages
      Conflict resolution
      Object oriented databases
      Object oriented query model
      Reusability
      Schema evolution
      Data structures
      Permalink
      http://hdl.handle.net/11693/27728
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