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Random Sampling from Pseudo-Ranked B+ Trees.

Gennady Antoshenkov: Random Sampling from Pseudo-Ranked B+ Trees. VLDB 1992: 375-382
@inproceedings{DBLP:conf/vldb/Antoshenkov92,
  author    = {Gennady Antoshenkov},
  editor    = {Li-Yan Yuan},
  title     = {Random Sampling from Pseudo-Ranked B+ Trees},
  booktitle = {18th International Conference on Very Large Data Bases, August
               23-27, 1992, Vancouver, Canada, Proceedings},
  publisher = {Morgan Kaufmann},
  year      = {1992},
  isbn      = {1-55860-151-1},
  pages     = {375-382},
  ee        = {db/conf/vldb/Antoshenkov92.html},
  crossref  = {DBLP:conf/vldb/92},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

In the past, two basic approaches for sampling from B+ trees have been suggested: sampling from the ranked trees and acceptance/rejection sampling from non-ranked trees. The first approach requires the entire root-to-leaf path to be updated with each insertion and deletion. The second has no update overhead, but incurs a high rejection rate for the compressed-key B+ trees commonly used in practice. In this paper we introduce a new sampling method based on pseudo-ranked B+ trees, which are B+ trees supplemented with information loosely describing the estimated rank limits. This new method exhibits a very small rejection rate while paying only a marginal cost of the tree update overhead. We also present comparative efficiency measurements of different methods that were run on production databases and on several prototype workload simulations.

Copyright © 1992 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

Li-Yan Yuan (Ed.): 18th International Conference on Very Large Data Bases, August 23-27, 1992, Vancouver, Canada, Proceedings. Morgan Kaufmann 1992, ISBN 1-55860-151-1
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Referenced by

  1. Swarup Acharya, Viswanath Poosala, Sridhar Ramaswamy: Selectivity Estimation in Spatial Databases. SIGMOD Conference 1999: 13-24
  2. Phillip B. Gibbons, Yossi Matias: New Sampling-Based Summary Statistics for Improving Approximate Query Answers. SIGMOD Conference 1998: 331-342
  3. Paul M. Aoki: Generalizing ``Search'' in Generalized Search Trees (Extended Abstract). ICDE 1998: 380-389
  4. Joseph M. Hellerstein: Online Processing Redux. IEEE Data Eng. Bull. 20(3): 20-29(1997)
  5. Daniel Barbará, William DuMouchel, Christos Faloutsos, Peter J. Haas, Joseph M. Hellerstein, Yannis E. Ioannidis, H. V. Jagadish, Theodore Johnson, Raymond T. Ng, Viswanath Poosala, Kenneth A. Ross, Kenneth C. Sevcik: The New Jersey Data Reduction Report. IEEE Data Eng. Bull. 20(4): 3-45(1997)
  6. Gennady Antoshenkov, Mohamed Ziauddin: Query Processing and Optimization in Oracle Rdb. VLDB J. 5(4): 229-237(1996)
  7. Gennady Antoshenkov: Query Processing in DEC Rdb: Major Issues and Future Challenges. IEEE Data Eng. Bull. 16(4): 42-52(1993)
  8. Frank Olken, Doron Rotem: Sampling from Spatial Databases. ICDE 1993: 199-208
  9. Gennady Antoshenkov: Dynamic Query Optimization in Rdb/VMS. ICDE 1993: 538-547
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