Download or read book Decoupled Query Optimization for Federated Database Systems written by Amol V. Deshpande and published by . This book was released on 2001 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Learning Techniques for Query Optimization in Federated Database Systems written by Moira Norrie and published by . This book was released on 1989 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Query Optimization for Federated Database Systems written by Zhao-Ping Yu and published by . This book was released on 1996 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Instance level Integration Query Processing and Optimization in Federated Database Systems written by Ee-Peng Lim and published by . This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semantic Integrity Constraints in Federated Database Schemata written by Can Türker and published by IOS Press. This book was released on 1999 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federated Query Processing for the Semantic Web written by C. Buil-Aranda and published by IOS Press. This book was released on 2014-01-22 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last years, the amount of RDF data has increased exponentially over the Web, exposed via SPARQL endpoints. These SPARQL endpoints allow users to direct SPARQL queries to the RDF data. Federated SPARQL query processing allows to query several of these RDF databases as if they were a single one, integrating the results from all of them. This is a key concept in the Web of Data and it is also a hot topic in the community. Besides of that, the W3C SPARQL-WG has standardized it in the new Recommendation SPARQL 1.1._x000D_ This book provides a formalisation of the W3C proposed recommendation. This formalisation allows to identify existing errors and allows to correct them before the implementation phase or when the execution of these federated queries start. The book constitutes a valuable resource for any implementer since it also proposes solutions to the problems identified as well as proposing a set of SPARQL pattern reordering rules, which reduce the execution time of federated queries significantly._x000D_ Another strong point of this book is the research methodology followed. It states clearly the problems in the state of the art, next defines the research hypothesis for next providing a thoroughly analysis of the semantics of the SPARQL 1.1 specification. Once the theoretical part is concluded the book steps into the implementation part, describing clearly the implementation decisions for finally evaluating the overall system.

Download or read book RDF Database Systems written by Olivier Curé and published by Morgan Kaufmann. This book was released on 2014-11-24 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: RDF Database Systems is a cutting-edge guide that distills everything you need to know to effectively use or design an RDF database. This book starts with the basics of linked open data and covers the most recent research, practice, and technologies to help you leverage semantic technology. With an approach that combines technical detail with theoretical background, this book shows how to design and develop semantic web applications, data models, indexing and query processing solutions. - Understand the Semantic Web, RDF, RDFS, SPARQL, and OWL within the context of relational database management and NoSQL systems - Learn about the prevailing RDF triples solutions for both relational and non-relational databases, including column family, document, graph, and NoSQL - Implement systems using RDF data with helpful guidelines and various storage solutions for RDF - Process SPARQL queries with detailed explanations of query optimization, query plans, caching, and more - Evaluate which approaches and systems to use when developing Semantic Web applications with a helpful description of commercial and open-source systems

Download or read book Advances in Computing Communication and Control written by Srija Unnikrishnan and published by Springer. This book was released on 2013-01-11 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Third International Conference on Advances in Computing, Communication and Control, ICAC3 2013, held in Mumbai, India, in January 2013. The 69 papers presented in this volume were carefully reviewed and selected for inclusion in the book. They deal with topics such as image processing, artificial intelligence, robotics, wireless communications; data warehousing and mining, and are organized in topical sections named: computing; communication; control; and others.

Download or read book Query Optimization for Database Federation Systems written by Di Wang and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Database federation is one approach to data integration, in which a middleware, called mediator, provides uniform access to a number of heterogeneous data sources. In this thesis, we focus on the query optimization for distributed joins over database federation. One important observation in query optimization over distributed database system is that run-time conditions (namely available buffer size, CPU utilization in machine and network environment) can significantly affect the execution cost of a query plan. However, in existing database federation systems, very few studies have addressed run-time conditions. It is a challenging problem, because usually the mediator is not able to know the run-time conditions of remote sites and considering run-time conditions will bring about extra complexity to the optimizer. This thesis proposes the Cluster-and-Conquer algorithm for query optimization over database federation while efficiently considering run-time conditions. This algorithm has three-fold benefits. Firstly, the run-time conditions of machines are now available for cluster mediator. Secondly, each cluster mediator can deal with its own sub query concurrently, so the complexity of processing query plan is decreased. Thirdly, the algorithm outperforms other related approaches in terms of "cost of costing", because it removes unnecessary inter-cluster operations in the early stage. I have implemented a prototype data federation system with Cluster-and-Conquer algorithm. The experimental results showed the capabilities and efficiency of our algorithm and described the target scenarios where the algorithm performs better than other related approaches.

Download or read book Peer to Peer Grid and Service Orientation in Digital Library Architectures written by Can Türker and published by Taylor & Francis. This book was released on 2005 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the 6th Thematic Workshop of the EU Network of Excellence DELOS on Digital Library Architectures, held in Cagliari, Italy, in June 2004. The 15 revised full papers presented were carefully reviewed. The subjects covered include: service grids for scientific applications, distributed digital libraries, grid computing, peer-to-peer networks, service oriented architectures for digital libraries, a distributed digital library for support of community radios, multimedia management and search, query trading and processing, metadata management, retrieval functionality, and personalization services.

Download or read book A Query Optimization in Distributed Database Systems written by C-W. Chung and published by . This book was released on 1983 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Database Technology EDBT 2004 written by Elisa Bertino and published by Springer Science & Business Media. This book was released on 2004-02-25 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 9th International Conference on Extending Database Technology, EDBT 2004, held in Heraklion, Crete, Greece, in March 2004. The 42 revised full papers presented together with 2 industrial application papers, 15 software demos, and 3 invited contributions were carefully reviewed and selected from 294 submissions. The papers are organized in topical sections on distributed, mobile and peer-to-peer database systems; data mining and knowledge discovery; trustworthy database systems; innovative query processing techniques for XML data; data and information on the web; query processing techniques for spatial databases; foundations of query processing; advanced query processing and optimization; query processing techniques for data and schemas; multimedia and quality-aware systems; indexing techniques; and imprecise sequence pattern queries.

Download or read book Query Optimization of Distributed Database Systems written by Margaret Ng and published by . This book was released on 1992 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Query Optimization for Distributed Database Systems written by Robert Taylor (M.Sc.) and published by . This book was released on 2010 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimization of BPEL SQL Flows in Federated Database Systems written by Peter Reimann and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Query Optimization in Distributed Database Systems written by Chen, Arbee L.P. and published by . This book was released on 1984 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Query Optimization in Fragmented Distributed Database Systems written by Arie Segev and published by . This book was released on 1983 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: