Preference Query Analysis And Optimization
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Preference Query Analysis And Optimization
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Author : Yunjun Gao
language : en
Publisher: Springer
Release Date : 2017-11-02
Preference Query Analysis And Optimization written by Yunjun Gao and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-02 with Computers categories.
This book analyzes unexpected preference query results for three problems: causality and responsibility problems, why-not and why questions, and why-few and why-many questions. Further, it refines preference queries and discusses how to modify the original preference query based on different objectives, in order to obtain satisfying results. This highly informative and carefully presented book provides valuable insights for researchers, postgraduates and practitioners with an interest in database usability.
Postgresql Query Optimization
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Author : Henrietta Dombrovskaya
language : en
Publisher: Apress
Release Date : 2021-05-27
Postgresql Query Optimization written by Henrietta Dombrovskaya and has been published by Apress this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-27 with Computers categories.
Write optimized queries. This book helps you write queries that perform fast and deliver results on time. You will learn that query optimization is not a dark art practiced by a small, secretive cabal of sorcerers. Any motivated professional can learn to write efficient queries from the get-go and capably optimize existing queries. You will learn to look at the process of writing a query from the database engine’s point of view, and know how to think like the database optimizer. The book begins with a discussion of what a performant system is and progresses to measuring performance and setting performance goals. It introduces different classes of queries and optimization techniques suitable to each, such as the use of indexes and specific join algorithms. You will learn to read and understand query execution plans along with techniques for influencing those plans for better performance. The book also covers advanced topics such as the use of functions and procedures, dynamic SQL, and generated queries. All of these techniques are then used together to produce performant applications, avoiding the pitfalls of object-relational mappers. What You Will Learn Identify optimization goals in OLTP and OLAP systems Read and understand PostgreSQL execution plans Distinguish between short queries and long queries Choose the right optimization technique for each query type Identify indexes that will improve query performance Optimize full table scans Avoid the pitfalls of object-relational mapping systems Optimize the entire application rather than just database queries Who This Book Is For IT professionals working in PostgreSQL who want to develop performant and scalable applications, anyone whose job title contains the words “database developer” or “database administrator" or who is a backend developer charged with programming database calls, and system architects involved in the overall design of application systems running against a PostgreSQL database
Preferences And Similarities
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Author : Giacomo Riccia
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-06-23
Preferences And Similarities written by Giacomo Riccia 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 2009-06-23 with Computers categories.
The fields of similarity and preference are still broadening due to the exploration of new fields of application. This is caused by the strong impact of vagueness, imprecision, uncertainty and dominance on human and agent information, communication, planning, decision, action, and control as well as by the technical progress of the information technology itself. The topics treated in this book are of interest to computer scientists, statisticians, operations researchers, experts in AI, cognitive psychologists and economists.
Mysql 8 Query Performance Tuning
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Author : Jesper Wisborg Krogh
language : en
Publisher: Apress
Release Date : 2020-03-16
Mysql 8 Query Performance Tuning written by Jesper Wisborg Krogh and has been published by Apress this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-16 with Computers categories.
Identify, analyze, and improve poorly performing queries that damage user experience and lead to lost revenue for your business. This book will help you make query tuning an integral part of your daily routine through a multi-step process that includes monitoring of execution times, identifying candidate queries for optimization, analyzing their current performance, and improving them to deliver results faster and with less overhead. Author Jesper Krogh systematically discusses each of these steps along with the data sources and the tools used to perform them. MySQL 8 Query Performance Tuning aims to help you improve query performance using a wide range of strategies. You will know how to analyze queries using both the traditional EXPLAIN command as well as the new EXPLAIN ANALYZE tool. You also will see how to use the Visual Explain feature to provide a visually-oriented view of an execution plan. Coverage of indexes includes indexing strategies and index statistics, and you will learn how histograms can be used to provide input on skewed data distributions that the optimizer can use to improve query performance. You will learn about locks, and how to investigate locking issues. And you will come away with an understanding of how the MySQL optimizer works, including the new hash join algorithm, and how to change the optimizer’s behavior when needed to deliver faster execution times. You will gain the tools and skills needed to delight application users and to squeeze the most value from corporate computing resources. What You Will Learn Monitor query performance to identify poor performers Choose queries to optimize that will provide the greatest gain Analyze queries using tools such as EXPLAIN ANALYZE and Visual Explain Improve slow queries through a wide range of strategies Properly deploy indexes and histograms to aid in creating fast execution plans Understand and analyze locks to resolve contention and increase throughput Who This Book Is For Database administrators and SQL developers who are familiar with MySQL and need to participate in query tuning. While some experience with MySQL is required, no prior knowledge of query performance tuning is needed.
New Trends In Multimedia And Network Information Systems
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Author : K. Choroś
language : en
Publisher: IOS Press
Release Date : 2008-08-21
New Trends In Multimedia And Network Information Systems written by K. Choroś and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-08-21 with Computers categories.
New Trends in Multimedia and Network Information Systems discusses a very broad scope of subject matters including multimedia systems in their widest sense, web systems and network technologies. This monograph also includes texts devoted to more traditional information systems that draw on the experience of the multimedia and network systems. Each of the discussed research trends is considered from both theoretical and practical viewpoints. Imposing a clear-cut classification for such a diverse research area is not an easy task. The challenge is even greater due to the fact that in this book the focus lies on the most topical research work of scientists from all over the world. The studies are original and were not published anywhere else. The chapters represent the dominant advances in computer information systems and it is worth emphasizing that in most cases the research work relies heavily on the achievements and techniques developed originally in the area of artificial intelligence. As a result, the monograph is divided into four major parts: multimedia information technology; data processing in information systems; information system applications; and web systems and network technologies. Each of these parts covers a couple of chapters on detailed subject fields that comprise the area of its title.
Database And Expert Systems Applications
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Author : Sven Hartmann
language : en
Publisher: Springer
Release Date : 2018-08-20
Database And Expert Systems Applications written by Sven Hartmann and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-20 with Computers categories.
This two volume set of LNCS 11029 and LNCS 11030 constitutes the refereed proceedings of the 29th International Conference on Database and Expert Systems Applications, DEXA 2018, held in Regensburg, Germany, in September 2018. The 35 revised full papers presented together with 40 short papers were carefully reviewed and selected from 160 submissions. The papers of the first volume discuss a range of topics including: Big data analytics; data integrity and privacy; decision support systems; data semantics; cloud data processing; time series data; social networks; temporal and spatial databases; and graph data and road networks. The papers of the second volume discuss a range of the following topics: Information retrieval; uncertain information; data warehouses and recommender systems; data streams; information networks and algorithms; database system architecture and performance; novel database solutions; graph querying and databases; learning; emerging applications; data mining; privacy; and text processing.
Design Research The Sociotechnical Aspects Of Quality Creativity And Innovation
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Author : Dorian Marjanović
language : en
Publisher: Springer Nature
Release Date : 2024-03-19
Design Research The Sociotechnical Aspects Of Quality Creativity And Innovation written by Dorian Marjanović and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-19 with Technology & Engineering categories.
The book provides a holistic insight into design research, a comprehensive and cohesive vision of state-of-the-art knowledge about creating and improving quality products, creativity and innovation. Contributions in this volume serve as the illuminating compass for understanding engineering design research, offering a comprehensive perspective on product development, creativity, innovation, invention, and productivity, providing the historical trajectory of design science and exploring the frontiers of engineering design research. The presented educational projects were deployed across EU universities, providing insights for future design courses. Central to the discussions is the pivotal role of sociotechnical dimensions in engineering design, discussing issues of creativity, quality, human-centric methodologies, and the demands of emerging technologies emphasizing their pivotal role in engineering design success. The text offers a panoramic view of design research's current state and critical themes, providing a comprehensive overview for young researchers. Educators and mentors will deepen their knowledge, while experts will refine their methodologies and tools.
Foundations Of Information And Knowledge Systems
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Author : Stephen J. Hegner
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-25
Foundations Of Information And Knowledge Systems written by Stephen J. Hegner 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 2006-01-25 with Computers categories.
This book constitutes the refereed proceedings of the 4th International Symposium on Foundations of Information and Knowledge Systems, held in February 2006. The 14 revised full papers presented together with three revised short papers and one invited paper were carefully reviewed and selected from 54 submissions. Among the topics covered are the theoretical foundations of information and knowledge systems, as well as mathematical fields such as discrete mathematics, combinatorics, logics and finite model theory, and applications thereof for research on database and knowledge base theory.
Computational Intelligence For Knowledge Based System Design
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Author : Eyke Hüllermeier
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-06-17
Computational Intelligence For Knowledge Based System Design written by Eyke Hüllermeier 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 2010-06-17 with Computers categories.
The book constitutes the refereed proceedings of the 13th International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU 2010, held in Dortmund, Germany from June 28 - July 2, 2010. The 77 revised full papers were carefully reviewed and selected from 320 submissions and reflect the richness of research in the field of Computational Intelligence and represent developments on topics as: machine learning, data mining, pattern recognition, uncertainty handling, aggregation and fusion of information as well as logic and knowledge processing.
Neural Information Processing
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Author : Mufti Mahmud
language : en
Publisher: Springer Nature
Release Date : 2025-07-23
Neural Information Processing written by Mufti Mahmud and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-23 with Computers categories.
The sixteen-volume set, CCIS 2282-2297, constitutes the refereed proceedings of the 31st International Conference on Neural Information Processing, ICONIP 2024, held in Auckland, New Zealand, in December 2024. The 472 regular papers presented in this proceedings set were carefully reviewed and selected from 1301 submissions. These papers primarily focus on the following areas: Theory and algorithms; Cognitive neurosciences; Human-centered computing; and Applications.