These slides represent the first of a five-part tutorial presentation given at the 22nd International World Wide Web Conference (WWW 2013). This introduction gives a quick overview of Linked Data principles and SPARQL endpoints, which are requirements for understanding the rest of the tutorial. The focuses then shifts to Linked Data query processing with emphasis on the specific challenges faced due to the differences between Linked Data and both central and distributed databases. The author argues that current paradigms for processing queries over Linked Data (SPARQL endpoint federation and warehousing) could be replaced by either a data retrieval approach, a result construction approach, or a combination of the new approaches with the traditional paradigms.
URL: http://dsg.uwaterloo.ca/LDQTut2013/LDQTut2013_1.pdf
Keywords: Data Warehousing, SPARQL endpoint, Web of Data
Author: Hartig, Olaf
Date created: 2013-05-14 04:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P20M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive
- Knows the "five stars" of Open Data: put data on the Web, preferably in a structured and preferably non-proprietary format, using URIs to name things, and link to other data.
- Understands that Linked Data (2006) extended the notion of a web of documents (the Web) to a notion of a web of finer-grained data (the Linked Data cloud).
- Understands the concept of Federated Searches.