A brief video on DBPedia and SPARQL. Demonstrates how to query DBPedia for useful/interesting questions. Shows not just how to construct SPARQL queries, but also the critical process of determining the appropriate classes and properties of a resource which one must first know before attempting to construct a query.
URL: https://www.youtube.com/watch?v=BmHKb0kLGtA
Keywords: Properties, Classes, Ontology, DBPedia, SPARQL
Author: JohnM
Date created: 2014-05-11 07:00:00.000
Language: http://id.loc.gov/vocabulary/iso639-2/eng
Time required: P10M
- Accesses DBPedia's SNORQL/SPARQL endpoint and issues simple queries.
- Interacting with RDF data
- Querying RDF data
- Uses available tools, servers, and endpoints to issue queries against a dataset.
- Accesses DBPedia's SNORQL/SPARQL endpoint and issues simple queries.
- Accesses DBPedia's SNORQL/SPARQL endpoint and issues simple queries.
- Uses available tools, servers, and endpoints to issue queries against a dataset.
- Querying RDF data
- Interacting with RDF data
- Reads and understands high-level descriptions of the classes and properties of a dataset in order to write queries.
- Interacting with RDF data
- Querying RDF data
- Reads and understands high-level descriptions of the classes and properties of a dataset in order to write queries.
- Reads and understands high-level descriptions of the classes and properties of a dataset in order to write queries.
- Querying RDF data
- Interacting with RDF data
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Interacting with RDF data
- Querying RDF data
- Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Uses FILTER to formulates queries that eliminate solutions from a result set.
- Understands how to combine and filter graph patterns using operators such as UNION, OPTIONAL, FILTER, and MINUS.
- Querying RDF data
- Interacting with RDF data
- Uses ORDER BY to define ordering conditions by variable, function call, or expression.
- Interacting with RDF data
- Querying RDF data
- Understands the major SPARQL result set modifiers, e.g., to limit or sort results, or to return distinct results only once.
- Uses ORDER BY to define ordering conditions by variable, function call, or expression.
- Uses ORDER BY to define ordering conditions by variable, function call, or expression.
- Understands the major SPARQL result set modifiers, e.g., to limit or sort results, or to return distinct results only once.
- Querying RDF data
- Interacting with RDF data
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