The Effect Of Data Skew On The Performance Of Hash Based Join Algorithms Ina Shared Everything Environment
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The Effect Of Data Skew On The Performance Of Hash Based Join Algorithms Ina Shared Everything Environment
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Author : E. Winarko
language : en
Publisher:
Release Date : 1992
The Effect Of Data Skew On The Performance Of Hash Based Join Algorithms Ina Shared Everything Environment written by E. Winarko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
The Effect Of Data Skew On The Performance Of Hash Based Join Algorithms In A Shared Everything Environment
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Author : Edi Winarko
language : en
Publisher:
Release Date : 1992
The Effect Of Data Skew On The Performance Of Hash Based Join Algorithms In A Shared Everything Environment written by Edi Winarko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Relational databases categories.
The Hybrid algorithm is modified to deal with overflow of partitions in main memory and on disk. Two approaches to main memory partition overflow (Static and Dynamic) are described and compared."
Improving Hash Join Performance By Exploiting Intrinsic Data Skew
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Author :
language : en
Publisher:
Release Date : 2005
Improving Hash Join Performance By Exploiting Intrinsic Data Skew written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Large relational databases are a part of all of our lives. The government uses them and almost any store you visit uses them to help process your purchases. Real-world data sets are not uniformly distributed and often contain significant skew. Skew is present in commercial databases where, for example, some items are purchased far more often than others. A relational database must be able to efficiently find related information that it stores. In large databases the most common method used to find related information is a hash join algorithm. Although mitigating the negative effects of skew on hash joins has been studied, no prior work has examined how the statistics present in modern database systems can allow skew to be exploited and used as an advantage to improve the performance of hash joins. This thesis presents Histojoin: a join algorithm that uses statistics to identify data skew and improve the performance of hash join operations. Experimental results show that for skewed data sets Histojoin performs significantly fewer I/O operations and is faster by 10 to 60% than standard hash join algorithms.
Query Processing In Parallel Relational Database Systems
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Author : Hongjun Lu
language : en
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
Release Date : 1994
Query Processing In Parallel Relational Database Systems written by Hongjun Lu and has been published by Institute of Electrical & Electronics Engineers(IEEE) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Computers categories.
Provides readers with a background knowledge of parallel database query processing and optimization and covers recent developments in the field. Subjects include design approaches, architecture of parallel database systems, parallel sorting, parallel processing of join, data skew and load balancing,
Modern Database Systems
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Author : Won Kim
language : en
Publisher: Addison-Wesley Professional
Release Date : 1995
Modern Database Systems written by Won Kim and has been published by Addison-Wesley Professional this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Computers categories.
Next-generation database technology; Object-oriented database; Technology for interoperating legacy databases; The OMG object model; Object SQL.
The Proceedings Of The Third International Symposium On Cooperative Database Systems For Advanced Applications
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Author : Hongjun Lu
language : en
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
Release Date : 2000
The Proceedings Of The Third International Symposium On Cooperative Database Systems For Advanced Applications written by Hongjun Lu and has been published by Institute of Electrical & Electronics Engineers(IEEE) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Computers categories.
Annotation Held in April 2001, this symposium addressed the double-edged sword of the Internet and Web in regard to the ease and complexity of accessing databases and other data resources. The two dozen presentations given during seven sessions address a healthcare application (a computerized clinical test-ordering prototype); integration of semi-structured and structured/inconsistent databases; object-oriented representation for XML data; DW, DM, and DL for three-dimensional data and systems such as the China Digital Library; intelligent agents for Web ads and multimedia indexing; cooperative workflow approaches; enterprise systems; and DBMS systems. Includes graphic representations, the conference chairs' message, program committee members and other organizational details. Lacks a subject index. c. Book News Inc.
Masters Theses In The Pure And Applied Sciences
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Author : Wade H. Shafer
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Masters Theses In The Pure And Applied Sciences written by Wade H. Shafer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the though that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemi nation. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 37 (thesis year 1992) a total of 12,549 thesis titles from 25 Canadian and 153 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 37 reports theses submitted in 1992, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Four Types Of Data Skew And Their Effect On Parallel Join Performance
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Author : University of Texas at Austin. Dept. of Computer Sciences
language : en
Publisher:
Release Date : 1990
Four Types Of Data Skew And Their Effect On Parallel Join Performance written by University of Texas at Austin. Dept. of Computer Sciences and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Algorithms categories.
Abstract: "Recent work on parallel joins and data skew has concentrated on algorithm design without considering the causes and characteristics of data skew itself. This paper presents a simple analytic model of data skew and identifies four distinct types: tuple population skew, selectivity skew, hash partition skew and join probability skew. To demonstrate the model, a representative algorithm, the GRACE parallel join algorithm, is analyzed. Results of the analysis indicate that skew effects are substantial, and that they vary greatly with the type of skew. Also, skew effects vary substantially with system and data characteristics such as communications speed, cardinality and selectivity."
Advances In Database Technology Edbt 94
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Author : Matthias Jarke
language : en
Publisher: Springer Science & Business Media
Release Date : 1994-03-09
Advances In Database Technology Edbt 94 written by Matthias Jarke and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-03-09 with Computers categories.
The fourth international conference on Extending Data Base Technology was held in Cambridge, UK, in March 1994. The biannual EDBT has established itself as the premier European database conference. It provides an international forum for the presentation of new extensions to database technology through research, development, and application. This volume contains the scientific papers of the conference. Following invited papers by C.M. Stone and A. Herbert, it contains 31 papers grouped into sections on object views, intelligent user interface, distributed information servers, transaction management, information systems design and evolution, semantics of extended data models,accessing new media, join algorithms, query optimization, and multimedia databases.
High Performance Parallel Database Processing And Grid Databases
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Author : David Taniar
language : en
Publisher: John Wiley & Sons
Release Date : 2008-09-17
High Performance Parallel Database Processing And Grid Databases written by David Taniar and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-17 with Computers categories.
The latest techniques and principles of parallel and grid database processing The growth in grid databases, coupled with the utility of parallel query processing, presents an important opportunity to understand and utilize high-performance parallel database processing within a major database management system (DBMS). This important new book provides readers with a fundamental understanding of parallelism in data-intensive applications, and demonstrates how to develop faster capabilities to support them. It presents a balanced treatment of the theoretical and practical aspects of high-performance databases to demonstrate how parallel query is executed in a DBMS, including concepts, algorithms, analytical models, and grid transactions. High-Performance Parallel Database Processing and Grid Databases serves as a valuable resource for researchers working in parallel databases and for practitioners interested in building a high-performance database. It is also a much-needed, self-contained textbook for database courses at the advanced undergraduate and graduate levels.