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Konzepte zur Abschätzung von Selektivität und Ausführungskosten für User-Defined table Operators

title Konzepte zur Abschätzung von Selektivität und Ausführungskosten für User-Defined table Operators
creator Watzal, Bernd
date 2000-06-30
language ger
identifier  http://www.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=STUD-1772&engl=1
description 56 pages
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.
publisher Stuttgart, Germany, Universität Stuttgart
type Text
Student Thesis
source ftp://ftp.informatik.uni-stuttgart.de/pub/library/medoc.ustuttgart_fi/STUD-1772/STUD-1772.pdf
contributor Anwendersoftware (IPVR)
format application/pdf
658488 Bytes
subject Database Management Systems (CR H.2.4)
object-relational database system
user-defined function
relation Student Thesis No. 1772