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2012 International Conference on Computational Intelligence and Software Engineering (CiSE 2012)(E-BOOK)

Wuhan,China,2012-12-142012-12-162012

ISBN: 978-1-61896-036-8 Scientific Research Publishing

E-Book 275pp Pub. Date: December 2012

Category: Computer Science & Communications

Price: $100

Title: On Database Systems with Variable Implementation Schemas
Source: 2012 International Conference on Computational Intelligence and Software Engineering (CiSE 2012)(E-BOOK) (pp 193-198)
Author(s): Janusz R. Getta, School of Computer Science and Software Engineering University of Wollongong,Wollongong, NSW,Australia
Abstract: The performance of database applications strongly depends on efficient algorithms used for the implementation of applications as well as on the appropriate implementation of persistent data structures. The existing database systems usually offer one size fits it all method of implementation of its persistent data structures. The objective of this work is to investigate a class of database systems with variable implementation of persistent data structures. We call such systems as database systems with variable implementation schemas. An idea is to optimize performance of database applications not only through more efficient algorithms but also through selection of the appropriate persistent data structures and the ways how the algorithms operate on these structures. In this work we show how an extended notation of Object-Relationship-Attribute Semi-Structured (XORA-SS) data model can be used for formal specification of implementation schemas and we overview a system of operations for XORA-SS data model that enables implementation of database applications in such systems. The paper describes organization of database systems with variable implementation schemas and in particular it concentrates on the global and local optimizations of data structures against a given collection of database applications.


 

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