Semantic Web. SPARQL By Example (1) Introduction SPARQL by Example is a SPARQL tutorial created by W3C SPARQL Working Group co-chair Lee Feigenbaum and W3C team member Eric Prud'hommeaux.
NOTE: We intend to update this tutorial in the next couple of months. If you have suggestions, please let us know. How to Use This Tutorial Use your mouse or your keyboard's arrow keys to go back and forth (click on the tutorial if this doesn't work to ensure that it has the keyboard's focus). If you get stuck, ask for help in the forums. XQuery/SPARQL Tutorial - Wikibooks, collection of open-content textbooks.
SPARQL interface The emp-dept RDF can be queried using SPARQL via an XQuery front end to a store provided by Talis.
This script supports SPARQL queries and browsing the RDF graph. The interface expands a query like that you can run here into. ESWC 2007 Tutorial: SPARQL - Where are we? Current state, theory and practice. Marcelo Arenas Claudio Gutierrez Bijan Parsia Jorge Pérez Axel Polleres Andy Seaborne Supported by FONDECYT grants 1070732, 1070348, CWR project P04-067-F, EU FP6 project inContext IST-034718, MEC/URJC project SWOS URJC-CM-2006-CET-0300.
Unit 1Unit 2Unit 3Unit 4Unit 5Unit 6 Handout booklet (PDF) After the data and ontology layers of the Semantic Web stack have achieved considerable stability through standard recommendations such as RDF and OWL, the query layer is the next item to be completed on W3C's agenda. This is just the right moment to reflect on the current state of the language and its applications, which we aim to provide in the proposed tutorial. The presenters of this tutorial tackle the topic of Semantic Web querying and SPARQL from various, complementary viewpoints. The first part of the tutorial will have emphasis in providing a solid basis in the semantics and use of the language.
Unit 1 - SPARQL Basics (90min) Material: Slides Unit 1 (PDF) Unit 2 - SPARQL Semantics (45min) J. C. A crash course in SPARQL - Data-gov Wiki. From Data-gov Wiki 1.
Introduction SPARQL is a query language for the Semantic Web. It was designed to be similar to SQL, a query laguage for relational databases, so it is relatively easy for people to learn it. An examples of a query can be You can go to copy and paste the previous code into the box and click on "run query". The results are displayed in HTML form (there are other formats we will look later). 2. A Triple is the minimal amount of information expressable in Semantic Web. A subject which is a URI (e.g., a "web address") that represents something.
Introducing Linked Data And The Semantic Web. Next: Introducing Graph Data What is Linked Data and the Semantic Web and what is all the hype about?
Principally, the Semantic Web is a Web 3.0 web technology - a way of linking data between systems or entities that allows for rich, self-describing interrelations of data available across the globe on the web. In essence, it marks a shift in thinking from publishing data in human readable HTML documents to machine readable documents. That means that machines can do a little more of the thinking work for us. What Does This Mean How It Does It Differ From The Web As It Is Today? Today, much of the data we get from the web is delivered to us in the form of web pages - HTML documents that are linked to each other through the use of hyperlinks. Enter Linked Data - Liberating Web Databases From Their Old Chains So the semantic web seeks to change the scape of the internet with regard this problem in a number of ways: But Where Do I Start?
It needn't be complicated.