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| Author | : J.F. Sequeda |
| Publisher | : IOS Press |
| Total Pages | : 212 |
| Release | : 2016-07-28 |
| Genre | : Computers |
| ISBN | : 1614996296 |
Download Integrating Relational Databases with the Semantic Web Book in PDF, ePub and Kindle
An early vision in Computer Science was to create intelligent systems capable of reasoning on larg¬e amounts of data. Independent results in the areas of Semantic Web and Relational Databases have advanced us towards this vision. Despite independent advances, the interface between Relational Databases and Semantic Web is poorly understood. This dissertation revisits this early vision with respect to current technology and addresses the following question: How and to what extent can Relational Databases be integrated with the Semantic Web? The thesis is that much of the existing Relational Database infrastructure can be reused to support the Semantic Web. Two problems are studied. Can a Relational Database be automatically virtualized as a Semantic Web data source? The first contribution is an automatic direct mapping from a Relational Database schema and data to RDF and OWL. The second contribution is a method capable of evaluating SPARQL queries against the Relational Database by exploiting two existing relational query optimizations. These contributions are embodied in the Ultrawrap system. Experiments show that SPARQL query execution performance on Ultrawrap is comparable to that of SQL queries written directly for the relational data. Such results have not been previously achieved. Can a Relational Database be mapped to existing Semantic Web ontologies and act as a reasoner? A third contribution is a method for Relational Databases to support inheritance and transitivity by compiling the ontology as mappings, implementing the mappings as views, using SQL recursion and optimizing by materializing views. Ultrawrap is extended with this contribution. Empirical analysis reveals that Relational Databases are able to effectively act as reasoners.
| Author | : Juan Federico Sequeda |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : 9783898387118 |
Download Integrating Relational Databases with the Semantic Web Book in PDF, ePub and Kindle
| Author | : Cristian Pérez de Laborda Schwankhart |
| Publisher | : VDM Publishing |
| Total Pages | : 0 |
| Release | : 2007 |
| Genre | : Ontology |
| ISBN | : 9783836451673 |
Download Incorporating Relational Data Into the Semantic Web Book in PDF, ePub and Kindle
Relational.OWL is a technique to automatically convert a relational database into a Semantic Web representation, enabling Semantic Web applications to access data actually stored in relational databases using their own built-in functionality. Since this representation does not result in objects containing real semantics, we additionally show how to create mappings from the rela-tional model to a target ontology using an arbitrary closed RDF query language. Using current Semantic Web techniques, a formerly relational data item, once converted to its Semantic Web representation, can neither be identified unambiguously, nor be backtracked to its original storage location in the relational database. We hence introduce a novel URI scheme for identifying not only databases, but also their schema and data components like tables or columns, giving us the possibility to specify the exact and identifying storage location of any data item in its original data source.
| Author | : Christoph Bussler |
| Publisher | : Springer |
| Total Pages | : 235 |
| Release | : 2005-02-04 |
| Genre | : Computers |
| ISBN | : 3540318399 |
Download Semantic Web and Databases Book in PDF, ePub and Kindle
This book constitutes the thoroughly refereed postproceedings of the Second International Workshop on Semantic Web and Databases, SWDB 2004, held in Toronto, Canada in August 2004 as a satellite workshop of VLDB 2004. The 14 revised full papers presented together with 2 papers by the invited keynote speakers were carefully selected during two rounds of reviewing and improvement from 47 submissions. Among the topics addressed are data semantics, semantic Web services, service-oriented computing, workflow composition, XML semantics, relational tables, ontologies, semantic Web algebra, heterogeneous data sources, context mediation, OWL, ontology engineering, data integration, semantic Web queries, database queries, and peer-to-peer warehouses.
| Author | : Bhavani Thuraisingham |
| Publisher | : CRC Press |
| Total Pages | : 335 |
| Release | : 2002-03-27 |
| Genre | : Computers |
| ISBN | : 1420000020 |
Download XML Databases and the Semantic Web Book in PDF, ePub and Kindle
Efficient access to data, sharing data, extracting information from data, and making use of the information have become urgent needs for today's corporations. With so much data on the Web, managing it with conventional tools is becoming almost impossible. New tools and techniques are necessary to provide interoperability as well as warehousing betw
| Author | : Nikolaos Konstantinou |
| Publisher | : Springer |
| Total Pages | : 146 |
| Release | : 2015-04-10 |
| Genre | : Computers |
| ISBN | : 3319160745 |
Download Materializing the Web of Linked Data Book in PDF, ePub and Kindle
This book explains the Linked Data domain by adopting a bottom-up approach: it introduces the fundamental Semantic Web technologies and building blocks, which are then combined into methodologies and end-to-end examples for publishing datasets as Linked Data, and use cases that harness scholarly information and sensor data. It presents how Linked Data is used for web-scale data integration, information management and search. Special emphasis is given to the publication of Linked Data from relational databases as well as from real-time sensor data streams. The authors also trace the transformation from the document-based World Wide Web into a Web of Data. Materializing the Web of Linked Data is addressed to researchers and professionals studying software technologies, tools and approaches that drive the Linked Data ecosystem, and the Web in general.
| Author | : John Hebeler |
| Publisher | : John Wiley & Sons |
| Total Pages | : 662 |
| Release | : 2011-02-25 |
| Genre | : Computers |
| ISBN | : 1118080602 |
Download Semantic Web Programming Book in PDF, ePub and Kindle
The next major advance in the Web-Web 3.0-will be built on semantic Web technologies, which will allow data to be shared and reused across application, enterprise, and community boundaries. Written by a team of highly experienced Web developers, this book explains examines how this powerful new technology can unify and fully leverage the ever-growing data, information, and services that are available on the Internet. Helpful examples demonstrate how to use the semantic Web to solve practical, real-world problems while you take a look at the set of design principles, collaborative working groups, and technologies that form the semantic Web. The companion Web site features full code, as well as a reference section, a FAQ section, a discussion forum, and a semantic blog.
| Author | : Roberto de Virgilio |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 554 |
| Release | : 2010-01-08 |
| Genre | : Computers |
| ISBN | : 3642043291 |
Download Semantic Web Information Management Book in PDF, ePub and Kindle
Databases have been designed to store large volumes of data and to provide efficient query interfaces. Semantic Web formats are geared towards capturing domain knowledge, interlinking annotations, and offering a high-level, machine-processable view of information. However, the gigantic amount of such useful information makes efficient management of it increasingly difficult, undermining the possibility of transforming it into useful knowledge. The research presented by De Virgilio, Giunchiglia and Tanca tries to bridge the two worlds in order to leverage the efficiency and scalability of database-oriented technologies to support an ontological high-level view of data and metadata. The contributions present and analyze techniques for semantic information management, by taking advantage of the synergies between the logical basis of the Semantic Web and the logical foundations of data management. The book’s leitmotif is to propose models and methods especially tailored to represent and manage data that is appropriately structured for easier machine processing on the Web. After two introductory chapters on data management and the Semantic Web in general, the remaining contributions are grouped into five parts on Semantic Web Data Storage, Reasoning in the Semantic Web, Semantic Web Data Querying, Semantic Web Applications, and Engineering Semantic Web Systems. The handbook-like presentation makes this volume an important reference on current work and a source of inspiration for future development, targeting academic and industrial researchers as well as graduate students in Semantic Web technologies or database design.
| Author | : Andreas Harth |
| Publisher | : CRC Press |
| Total Pages | : 566 |
| Release | : 2016-04-19 |
| Genre | : Computers |
| ISBN | : 1466582413 |
Download Linked Data Management Book in PDF, ePub and Kindle
Linked Data Management presents techniques for querying and managing Linked Data that is available on today's Web. The book shows how the abundance of Linked Data can serve as fertile ground for research and commercial applications.The text focuses on aspects of managing large-scale collections of Linked Data. It offers a detailed introduction to L
| Author | : Vipul Kashyap |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 415 |
| Release | : 2008-09-27 |
| Genre | : Computers |
| ISBN | : 3540764526 |
Download The Semantic Web Book in PDF, ePub and Kindle
The Semantic Web is a vision – the idea of having data on the Web defined and linked in such a way that it can be used by machines not just for display purposes but for automation, integration and reuse of data across various applications. However, there is a widespread misconception that the Semantic Web is a rehash of existing AI and database work. Kashyap, Bussler, and Moran dispel this notion by presenting the multi-disciplinary technological underpinnings such as machine learning, information retrieval, service-oriented architectures, and grid computing. Thus they combine the informational and computational aspects needed to realize the full potential of the Semantic Web vision.
