'Bitmap indices' presentation slideshows

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B-trees - Hashing

B-trees - Hashing

B-trees - Hashing. Review: B-trees and B+-trees. Multilevel, disk-aware, balanced index methods primary or secondary dense or sparse supports selection and range queries B+-trees: most common indexing structure in databases all actual values stored on leaf-nodes. Optimality:

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632 views • 49 slides
HDF5 FastQuery Accelerating Complex Queries on HDF Datasets using Fast Bitmap Indices

HDF5 FastQuery Accelerating Complex Queries on HDF Datasets using Fast Bitmap Indices

HDF5 FastQuery Accelerating Complex Queries on HDF Datasets using Fast Bitmap Indices. John Shalf, Wes Bethel LBNL Visualization Group Kensheng Wu, Kurt Stockinger LBNL SDM Center Luke Gosink, Ken Joy UC Davis IDAV. Motivation and Problem Statement. Too much data.

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556 views • 38 slides
Bitmap Indices for Speeding Up End User Physics Analysis

Bitmap Indices for Speeding Up End User Physics Analysis

Bitmap Indices for Speeding Up End User Physics Analysis. Main Results of Ph.D. Thesis Kurt Stockinger Database Group, IT-Division, CERN Formerly affiliated with: Institute of Computer Science and Business Informatics, University of Vienna, Austria. Outline.

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491 views • 36 slides
Chapter 11: Indexing and Hashing

Chapter 11: Indexing and Hashing

Chapter 11: Indexing and Hashing. Indexing Basic Concepts Ordered Indices B+-Tree Index Files Hashing Static Dynamic Hashing. Hashing. Static hashing Dynamic hashing. Hashing. key ? h(key). <key>. Buckets (typically 1 disk block). Example hash function.

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547 views • 30 slides
Strategies for Processing Ad Hoc Queries on Large Data Warehouses

Strategies for Processing Ad Hoc Queries on Large Data Warehouses

Strategies for Processing Ad Hoc Queries on Large Data Warehouses. Kurt Stockinger CERN John Wu & Arie Shoshani Lawrence Berkeley National Lab. Outline. Motivation for designing our own software Many large scientific data warehouses need to process ad hoc queries Lack of efficient indices

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353 views • 24 slides
Bitmap Indices for Data Warehouse

Bitmap Indices for Data Warehouse

Bitmap Indices for Data Warehouse. Jianlin Feng School of Software SUN YAT-SEN UNIVERSITY Feb 27, 2009. Star Schema Vs. Multi-dimensional Range Queries. SUM (qty * amt) WHERE ProdId in [p1.. p10] AND custId < 200.

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414 views • 22 slides
Bitmap Indices for Data Warehouse

Bitmap Indices for Data Warehouse

Bitmap Indices for Data Warehouse. Jianlin Feng School of Software SUN YAT-SEN UNIVERSITY. Star Schema Vs. Multi-dimensional Range Queries. SUM (qty * amt) WHERE ProdId in [p1.. p10] AND custId < 200. Characteristics of Multi-Dimensional Range Queries in Data Warehouse. Ad-Hoc

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414 views • 21 slides
Bitmap Indices for Fast End-User Physics Analysis in ROOT

Bitmap Indices for Fast End-User Physics Analysis in ROOT

Bitmap Indices for Fast End-User Physics Analysis in ROOT. Kurt Stockinger 1 , Kesheng Wu 1 , Rene Brun 2 , Philippe Canal 3 (1) Berkeley Lab, Berkeley, USA (2) CERN, Geneva, Switzerland (3) Fermi Lab, Batavia, USA. Contents.

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318 views • 20 slides
Using Bitmap Index to Speed up Analyses of High-Energy Physics Data

Using Bitmap Index to Speed up Analyses of High-Energy Physics Data

Using Bitmap Index to Speed up Analyses of High-Energy Physics Data. John Wu , Arie Shoshani, Alex Sim, Junmin Gu, Art Poskanzer Lawrence Berkeley National Laboratory Wei-Ming Zhang Kent State University Jerome Lauret Brookhaven National Laboratory. Outline. Overview bitmap index

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266 views • 15 slides

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