ACM SIGMOD Anthology VLDB dblp.uni-trier.de

Low-Cost Compensation-Based Query Processing.

Øystein Grøvlen, Svein-Olaf Hvasshovd, Øystein Torbjørnsen: Low-Cost Compensation-Based Query Processing. VLDB 1998: 182-193
@inproceedings{DBLP:conf/vldb/GrovlenHT98,
  author    = {{\O}ystein Gr{\o}vlen and
               Svein-Olaf Hvasshovd and
               {\O}ystein Torbj{\o}rnsen},
  editor    = {Ashish Gupta and
               Oded Shmueli and
               Jennifer Widom},
  title     = {Low-Cost Compensation-Based Query Processing},
  booktitle = {VLDB'98, Proceedings of 24rd International Conference on Very
               Large Data Bases, August 24-27, 1998, New York City, New York,
               USA},
  publisher = {Morgan Kaufmann},
  year      = {1998},
  isbn      = {1-55860-566-5},
  pages     = {182-193},
  ee        = {db/conf/vldb/GrovlenHT98.html},
  crossref  = {DBLP:conf/vldb/98},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

Compensation-based query processing has been proposed in order to avoid lock contention between updating transactions and ad-hoc queries. This paper presents an algorithm based on undo /no-redo compensation. A query will read an inconsistent version of the database, but updates made by concurrent transactions are later undone to make the query result transaction-consistent. By processing the database internal log to obtain information on concurrent updates, queries impose no extra work on updating transactions. A simulation study shows that response times for query execution is significantly improved compared to the earlier compensation-based algorithms. Compared to executing queries with no consistency requirements, the algorithm gives only a small increase in query response times, while the effectson transaction response times are negligible.

Copyright © 1998 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.


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Printed Edition

Ashish Gupta, Oded Shmueli, Jennifer Widom (Eds.): VLDB'98, Proceedings of 24rd International Conference on Very Large Data Bases, August 24-27, 1998, New York City, New York, USA. Morgan Kaufmann 1998, ISBN 1-55860-566-5
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