ACM SIGMOD Anthology ACM SIGMOD dblp.uni-trier.de

Magic Conditions.

Inderpal Singh Mumick, Sheldon J. Finkelstein, Hamid Pirahesh, Raghu Ramakrishnan: Magic Conditions. PODS 1990: 314-330
@inproceedings{DBLP:conf/pods/MumickFPR90,
  author    = {Inderpal Singh Mumick and
               Sheldon J. Finkelstein and
               Hamid Pirahesh and
               Raghu Ramakrishnan},
  title     = {Magic Conditions},
  booktitle = {Proceedings of the Ninth ACM SIGACT-SIGMOD-SIGART Symposium on
               Principles of Database Systems, April 2-4, 1990, Nashville, Tennessee},
  publisher = {ACM Press},
  year      = {1990},
  isbn      = {0-89791-352-3},
  pages     = {314-330},
  ee        = {http://doi.acm.org/10.1145/298514.298584, db/conf/pods/MumickFPR90.html},
  crossref  = {DBLP:conf/pods/90},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

Much recent work has focussed on the bottom-up evaluation of Datalog programs. One approach, called Magic-Sets, is based on rewriting a logic program so that bottom-up fixpoint evaluation of the program avoids generation of irrelevant facts ([BMSU86, BR87, Ram88]). It is widely believed that the principal application of the Magic-Sets technique is to restrict computation in recursive queries using equijoin predicates. We extend the Magic-Set transformation to use predicates other than equality (X > 10, for example). This Extended Magic-Set technique has practical utility in "real" relational databases, not only for recursive queries, but for non-recursive queries as well; in ([MFPR9O]) we use the results in this paper and those in [MPR89] to define a magic-set transformation for relational databases supporting SQL and its extensions, going on to describe an implementation of magic in Starburst ([HFLP89]). We also give preliminary performance measurements.

In extending Magic-Sets, we describe a natural generalization of the common class of bound (b) and free (f) adornments. We also present, a formalism to compare adornment classes.

Copyright © 1990 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.


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Proceedings of the Ninth ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, April 2-4, 1990, Nashville, Tennessee. ACM Press 1990, ISBN 0-89791-352-3
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References

[BKMR89]
David B. Kemp, Kotagiri Ramamohanarao, Isaac Balbin, Krishnamurthy Meenakshi: Propagating Constraints in Recusive Deduction Databases. NACLP 1989: 981-998 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[BMSU86]
François Bancilhon, David Maier, Yehoshua Sagiv, Jeffrey D. Ullman: Magic Sets and Other Strange Ways to Implement Logic Programs. PODS 1986: 1-15 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[BR87]
Catriel Beeri, Raghu Ramakrishnan: On the Power of Magic. PODS 1987: 269-284 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[HFLP89]
Laura M. Haas, Johann Christoph Freytag, Guy M. Lohman, Hamid Pirahesh: Extensible Query Processing in Starburst. SIGMOD Conference 1989: 377-388 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[HP88]
...
[ISO88]
...
[MPR89]
Inderpal Singh Mumick, Hamid Pirahesh, Raghu Ramakrishnan: The Magic of Duplicates and Aggregates. VLDB 1990: 264-277 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[MFPR90]
Inderpal Singh Mumick, Sheldon J. Finkelstein, Hamid Pirahesh, Raghu Ramakrishnan: Magic is Relevant. SIGMOD Conference 1990: 247-258 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[Mor88]
Katherine A. Morris: An Algorithm for Ordering Subgoals in NAIL! PODS 1988: 82-88 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[Ram88]
Raghu Ramakrishnan: Magic Templates: A Spellbinding Approach to Logic Programs. ICLP/SLP 1988: 140-159 CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML
[Ull88]
Jeffrey D. Ullman: Principles of Database and Knowledge-Base Systems, Volume I. Computer Science Press 1988, ISBN 0-7167-8158-1
Contents CiteSeerX Google scholar pubzone.org BibTeX bibliographical record in XML

Copyright © Fri Mar 12 17:19:55 2010 by Michael Ley (ley@uni-trier.de)