Formulates advanced queries using FROM NAMED and GRAPH on local data. – Linked Data for Professional Education

Learning SPARQL: 2nd Edition

Sat, 16 Jan 2016 13:43:28 +0000

This book teaches how to use SPARQL 1.1, starting off with simple queries that demonstrate the language using a query-by-example approach and then taking the reader through all the key features of the SPARQL 1.1 query and update languages. All example code is provided for the reader and can be run with open-source software. In addition to the print version, this book is available in EBook, DAISY, ePub, Mobi and PDF formats.

URL: http://learningsparql.com/
Keywords: SPARQL, ARQ, Graph, SPARQL endpoint, Apache Jena
Author: DuCharme, Bob
Publisher: O’Reilly
Date created: 2013-08-01 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P8H
Educational use: instruction
Educational audience: professional
Interactivity type: expositive

Dynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes?

Abi Evans — Tue, 15 Sep 2015 02:33:08 +0000

SPARQL is the W3C standard for querying RDF data, but it mostly provides means for querying simple RDF graphs only, whereas querying with respect to RDF Schema or other entailment regimes is left outside the current specification (NOTE: This article was written prior to SPARQL 1.1). In this paper, the authors argue that SPARQL faces certain unwanted ramifications when querying ontologies in conjunction with RDF datasets that comprise multiple named graphs, and they provide an extension for SPARQL that remedies these effects. Moreover, since RDF Schema inference has a close relationship with logic rules, the authors generalize their approach to select a custom ruleset for specifying inferences to be taken into account in a SPARQL query.

URL: http://aran.library.nuigalway.ie/xmlui/handle/10379/456
Keywords: SPARQL, RDF Schema, Datalog, SQL
Author: Polleres, Axel
Publisher: Springer
Date created: 2009-01-01 05:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P30M
Educational use: instruction
Educational audience: student
Interactivity type: expositive

Simple SPARQL Tutorial: Querying Named Graphs – using NAMED GRAPH and GRAPH

Abi Evans — Thu, 13 Aug 2015 03:26:19 +0000

Continuing the discussion of Named Graphs from the previous tutorial in the series, this tutorial discusses the functionality provided by using URIs to name graphs. Using FROM NAMED, UNION, and GRAPH keywords to run queries and join results. This topic is continued in the next tutorial in the series.

URL: https://www.youtube.com/watch?v=NGAQNYwX5kQ
Keywords: SPARQL, Named Graph
Author: Sadawi, Noureddin
Date created: 2014-03-03 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M

Mashing Up LOGD Data with SPARQL

Abi Evans — Thu, 13 Aug 2015 03:26:17 +0000

By the end of this tutorial the user should be able to understand how to use SPARQL queries to mash up LOGD datasets, as well as how a SPARQL query is connected to LOGD data and metadata at different levels of granularity. This tutorial assumes familiarity with the SPARQL query language. NOTE: The authors of this resource use the term "mashup" to mean the interlinking of datasets which contain identical entities and equivalent property values.

URL: http://logd.tw.rpi.edu/tutorial/mashing_logd_data_sparql
Keywords: SPARQL, Government Open Data, Linked Open Data
Author: Ding, Li
Publisher: TWC LOGD
Date created: 2010-10-12 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M

SPARQL Tutorial: Datasets

Abi Evans — Thu, 13 Aug 2015 03:26:17 +0000

This tutorial covers RDF Datasets- the units that are queried by a SPARQL query. An RDF Dataset consists of a default graph, and a number of named graphs. Discusses the use of the GRAPH keyword; querying to find data from graphs that match a pattern (the name of the graphs to be queried can be determined with the query itself); how to describe RDF Datasets using FROM and FROM NAMED.

URL: http://jena.apache.org/tutorials/sparql_datasets.html
Keywords: SPARQL, Named Graph, Default Graph
Publisher: The Apache Software Foundation
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M

Simple SPARQL Tutorial: More on Querying Named Graphs – Multiple NAMED GRAPHs

Abi Evans — Thu, 13 Aug 2015 03:26:17 +0000

Building on the previous tutorials, which discussed Named Graphs and how to construct queries using the NAMED GRAPH keyword, this tutorial shows how to run a query against multiple Named Graphs.

URL: https://www.youtube.com/watch?v=gil6AUw2PGM
Keywords: SPARQL, Named Graph
Author: Sadawi, Noureddin
Date created: 2014-03-03 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
Interactivity type: mixed