Download or read book DATAFLOW QUERY PROCESSING AND OPTIMIZATION QUERY PROCESSING DATABASE PROCESSING SCHEMA GRAPH written by PIYUSH GOEL and published by . This book was released on 1992 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: the query graph, it is not feasible to determine the optimal schedule for a general query graph.
Download or read book A Dataflow Mechanism for Supporting Query Optimization written by Patricia M. Kalvin and published by . This book was released on 1984 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to develop a tool which can be used to implement query processing algorithms produced by a query optimizer. The tool should have the following properties: (1) it should support a description of the query solution in a dataflow-like language, (2) it should support data retrieval functions which are independent of the rest of the system, (3) it should allow file access to be treated as a virtual operator, (4) it should be able to run on today's serial architectures, yet have the capability to expand to future parallel systems. The algorithm for processing a query can be described easily and naturally using a dataflow-like language. Because solutions to queries involve streams of data, i.e. each file access can be visualized as an operator producing a stream of data, dataflow languages lend themselves to easily describing query solutions. By making data retrieval functions independent of the rest of the system, new technologies in data storage can easily be added to an existing system. The system can also be more responsive to user needs by allowing file organization to be changed without having to recompile the entire system. Virtual file access allows the underlying file organization to be transparent to the query optimizer. This means that new file organizations can be handled by the optimizer without having to restructure the optimization strategy. The constraint of a serial processor is present because this allows problems that benefit from a dataflow approach to be solved using that approach even though the only processor available is a serial processor.
Download or read book Query Processing over Graph structured Data on the Web written by M. Acosta Deibe and published by IOS Press. This book was released on 2018-10-12 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last years, Linked Data initiatives have encouraged the publication of large graph-structured datasets using the Resource Description Framework (RDF). Due to the constant growth of RDF data on the web, more flexible data management infrastructures must be able to efficiently and effectively exploit the vast amount of knowledge accessible on the web. This book presents flexible query processing strategies over RDF graphs on the web using the SPARQL query language. In this work, we show how query engines can change plans on-the-fly with adaptive techniques to cope with unpredictable conditions and to reduce execution time. Furthermore, this work investigates the application of crowdsourcing in query processing, where engines are able to contact humans to enhance the quality of query answers. The theoretical and empirical results presented in this book indicate that flexible techniques allow for querying RDF data sources efficiently and effectively.
Download or read book Efficient Optimization and Processing of Queries Over Text rich Graph structured Data written by Günter Ladwig and published by KIT Scientific Publishing. This book was released on 2014-05-13 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many databases today capture both, structured and unstructured data. Making use of such hybrid data has become an important topic in research and industry. The efficient evaluation of hybrid data queries is the main topic of this thesis. Novel techniques are proposed that improve the whole processing pipeline, from indexes and query optimization to run-time processing. The contributions are evaluated in extensive experiments showing that the proposed techniques improve upon the state of the art.
Download or read book Readings in Database Systems written by Joseph M. Hellerstein and published by MIT Press. This book was released on 2005 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest edition of a popular text and reference on database research, with substantial new material and revision; covers classical literature and recent hot topics. Lessons from database research have been applied in academic fields ranging from bioinformatics to next-generation Internet architecture and in industrial uses including Web-based e-commerce and search engines. The core ideas in the field have become increasingly influential. This text provides both students and professionals with a grounding in database research and a technical context for understanding recent innovations in the field. The readings included treat the most important issues in the database area--the basic material for any DBMS professional. This fourth edition has been substantially updated and revised, with 21 of the 48 papers new to the edition, four of them published for the first time. Many of the sections have been newly organized, and each section includes a new or substantially revised introduction that discusses the context, motivation, and controversies in a particular area, placing it in the broader perspective of database research. Two introductory articles, never before published, provide an organized, current introduction to basic knowledge of the field; one discusses the history of data models and query languages and the other offers an architectural overview of a database system. The remaining articles range from the classical literature on database research to treatments of current hot topics, including a paper on search engine architecture and a paper on application servers, both written expressly for this edition. The result is a collection of papers that are seminal and also accessible to a reader who has a basic familiarity with database systems.
Download or read book Adaptive Query Processing written by Amol Deshpande and published by Now Publishers Inc. This book was released on 2007 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive Query Processing surveys the fundamental issues, techniques, costs, and benefits of adaptive query processing. It begins with a broad overview of the field, identifying the dimensions of adaptive techniques. It then looks at the spectrum of approaches available to adapt query execution at runtime - primarily in a non-streaming context. The emphasis is on simplifying and abstracting the key concepts of each technique, rather than reproducing the full details available in the papers. The authors identify the strengths and limitations of the different techniques, demonstrate when they are most useful, and suggest possible avenues of future research. Adaptive Query Processing serves as a valuable reference for students of databases, providing a thorough survey of the area. Database researchers will benefit from a more complete point of view, including a number of approaches which they may not have focused on within the scope of their own research.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shared Query Processing in Data Streaming Systems written by Saileshwar Krishnamurthy and published by . This book was released on 2006 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Basis of a Dataflow Model for Query Processing written by Forouzan Golshani and published by . This book was released on 1985* with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Data Integration written by AnHai Doan and published by Elsevier. This book was released on 2012-06-25 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Data Integration is the first comprehensive textbook of data integration, covering theoretical principles and implementation issues as well as current challenges raised by the semantic web and cloud computing. The book offers a range of data integration solutions enabling you to focus on what is most relevant to the problem at hand. Readers will also learn how to build their own algorithms and implement their own data integration application. Written by three of the most respected experts in the field, this book provides an extensive introduction to the theory and concepts underlying today's data integration techniques, with detailed, instruction for their application using concrete examples throughout to explain the concepts. This text is an ideal resource for database practitioners in industry, including data warehouse engineers, database system designers, data architects/enterprise architects, database researchers, statisticians, and data analysts; students in data analytics and knowledge discovery; and other data professionals working at the R&D and implementation levels. - Offers a range of data integration solutions enabling you to focus on what is most relevant to the problem at hand - Enables you to build your own algorithms and implement your own data integration applications
Download or read book Open and Novel Issues in XML Database Applications Future Directions and Advanced Technologies written by Pardede, Eric and published by IGI Global. This book was released on 2009-04-30 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers comprehensive issues and challenges discovered through leading international XML database research.
Download or read book Query Processing in Data warehousing Environments written by Venkatesh Harinarayan and published by . This book was released on 1997 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptive Query Processing written by Pedro G. Bizarro and published by . This book was released on 2006 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Processing Continuous Queries Over Streaming Data with Limited System Resources written by Brian Babcock and published by . This book was released on 2006 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book e Learning e Education and Online Training written by Weina Fu and published by Springer Nature. This book was released on 2023-03-08 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set, LNICST 453 and 454 constitutes the proceedings of the 8th EAI International Conference on e-Learning, e-Education, and Online Training, eLEOT 2022, held in Harbin, China, in July 2022. The 111 papers presented in this volume were carefully reviewed and selected from 226 submissions. This conference has brought researchers, developers and practitioners around the world who are leveraging and developing e-educational technologies as well as related learning, training, and practice methods. The theme of eLEOT 2022 was “New Trend of Information Technology and Artificial Intelligence in Education”. They were organized in topical sections as follows: IT promoted Teaching Platforms and Systems; AI based Educational Modes and Methods; Automatic Educational Resource Processing; Educational Information Evaluation.
Download or read book Data Management and Query Processing for Semistructured Data written by Jason George McHugh and published by . This book was released on 2000 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
