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From: wlrush@water.waterloo.edu (Wenchantress Wench Wendall)
Newsgroups: ont.events,uw.talks,uw.cs.grad
Subject: MASTER'S THESIS PRESENTATION
Keywords: Mr. Dexter Bradshaw, graduate student, Dept. Comp. Sci.
Message-ID: <2802@water.waterloo.edu>
Date: 1 Dec 89 14:29:44 GMT
Distribution: ont
Organization: U of Waterloo, Ontario
Lines: 41


DEPARTMENT OF COMPUTER SCIENCE
UNIVERSITY OF WATERLOO
SEMINAR ACTIVITIES

MASTER'S THESIS PRESENTATION

                    -Tuesday, December 5, 1989

Mr.   Dexter   Bradshaw,  graduate  student,  Dept.  of
Computer    Science,    will   speak   on   ``Retrieval
Optimization in the Minos Distributed Testbed.''

TIME:                 10:30 a.m.

ROOM:                 DC 1331

ABSTRACT

MINOS  is  a  distributed  data  management system that
supports   the  management  of  complex  data  objects.
Particular  emphasis  is  given  to  the  management of
complex  multimedia  data  (text,  voice, images, video
etc.).     This    thesis    describes    the   design,
implementation and performance evaluation of algorithms
for improving the retrieval performance of the system.

Three types of performance optimizations are described.
Query evaluation performance is improved by introducing
buffering  and  scheduling  algorithms that exploit the
sequential  characteristics  of the access methods used
by  the system for queries involving text and attribute
searches.   Data  retrieval from the database server is
improved  by  reducing  the  disk  exchanges in jukebox
server  architectures  through  appropriate  long  term
scheduling  algorithms.   Finally,  network  traffic is
reduced  by  using  set  processing,  routing  and flow
control  protocols  between  the  data  server  and its
clients.

                   November 30, 1989


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