This tutorial goes through some basic SPARQL queries in order to give the user a sense of how to discover and query different Linked Data (LD) sets. It seeks to answer, through some examples, the following questions:1. How do I know where to look to identify LD sets? 2. Once I know that a LD set of interest exists, how should I query it? 3. How do I query across different LD sets?
Keywords: Linked Data, Linked Open Data Cloud, Dataset, RDF, SPARQL, Query, SPARQL endpoint
Date created: 2012-01-01 07:00:00.000
Time required: P30M
Educational use: instruction
Educational audience: generalPublic
Interactivity type: active
- Knows relevant resources for discovering existing Linked Data datasets.
- Pulls data from a different SPARQL endpoints in one single query using the SERVICE directive.
- Reads and understands high-level descriptions of the classes and properties of a dataset in order to write queries.
- Uses available ontology browsing tools to explore the ontologies used in a particular dataset.