Compressed bitmap indices for efficient query processing Metadata

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Title

  • Main Title Compressed bitmap indices for efficient query processing

Creator

  • Author: Wu, Kesheng
    Creator Type: Personal
  • Author: Otoo, Ekow
    Creator Type: Personal
  • Author: Shoshani, Arie
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Mathematical, Information, and Computational Sciences Division.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2001-09-30

Language

  • English

Description

  • Content Description: Many database applications make extensive use of bitmap indexing schemes. In this paper, we study how to improve the efficiencies of these indexing schemes by proposing new compression schemes for the bitmaps. Most compression schemes are designed primarily to achieve good compression. During query processing they can be orders of magnitude slower than their uncompressed counterparts. The new schemes are designed to bridge this performance gap by reducing compression effectiveness and improving operation speed. In a number of tests on both synthetic data and real application data, we found that the new schemes significantly outperform the well-known compression schemes while using only modestly more space. For example, compared to the Byte-aligned Bitmap Code, the new schemes are 12 times faster and it uses only 50 percent more space. The new schemes use much less space(<30 percent) than the uncompressed scheme and are faster in a majority of the test cases.
  • Physical Description: vp.

Subject

  • Keyword: Compression
  • Keyword: Velocity Database Index Compression Bitmap
  • STI Subject Categories: 99 General And Miscellaneous//Mathematics, Computing, And Information Science
  • Keyword: Processing
  • Keyword: Database Index Compression Bitmap
  • Keyword: Performance

Source

  • Other Information: PBD: 30 Sep 2001

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: LBNL--47807
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/808915
  • Office of Scientific & Technical Information Report Number: 808915
  • Archival Resource Key: ark:/67531/metadc740929

Note

  • Display Note: OSTI as DE00808915
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