Student Thesis STUD-1772

BibliographyWatzal, Bernd: Konzepte zur Abschätzung von Selektivität und Ausführungskosten für User-Defined table Operators.
University of Stuttgart, Faculty of Computer Science, Student Thesis No. 1772 (2000).
56 pages, german.
CR-SchemaH.2.4 (Database Management Systems)
Keywordsobject-relational database system, user-defined function
Abstract

User-defined table operators are a new concept for object-relational database systems. They allow users to define functions that have one or more input tables as input and that produce a result table as output. Because of the generality of this approach any database operator can be implemented as the user-defined table operators. This thesis give information on how user-defined table operators can be integrated into the database system prototype MIDAS. Furthermore, some concepts for giving hints to the database optimizer on the behavior of a user-defined table operator are given. This information is essential to allow optimization of query plans that contain such operators.

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Contactrantzau@informatik.uni-stuttgart.de
Department(s)University of Stuttgart, Institute of Parallel and Distributed High-Performance Systems, Applications of Parallel and Distributed Systems
Project(s)MIDAS
Entry dateNovember 29, 2000
   Publ. Computer Science