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published in: Proceedings of the 11th IEEE International Conference on Data Engineering, pp. 7079, Taipei, Taiwan, March 610, 1995 Semantic Query Optimization for Methods
 

Summary: published in: Proceedings of the 11th IEEE International Conference on Data Engineering, pp. 70­79, Taipei, Taiwan, March 6­10, 1995
Semantic Query Optimization for Methods
in Object-Oriented Database Systems
Karl Aberer, Gisela Fischer
GMD­IPSI, Dolivostr. 15, 64293 Darmstadt, Germany
e­mail: {aberer, fischerg}@darmstadt.gmd.de
Abstract
Although the main difference between the relational and
the object-oriented data model is the possibility to define
object behavior, query optimization techniques in object-
oriented database systems are mainly based on the struc-
tural part of objects. We claim that the optimization poten-
tial emerging from methods has been strongly underesti-
mated so far. In this paper we concentrate on the question of
how semantic knowledge about methods can be considered
in query optimization. We rely on the algebraic and rule-
based approach for query optimization and present a
framework that allows to integrate schema-specific knowl-
edge by tailoring the query optimizer according to the par-
ticular application's needs. We sketch an implementation of

  

Source: Aberer, Karl - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne

 

Collections: Computer Technologies and Information Sciences