RDF query language
From Infogalactic: the planetary knowledge core
(Redirected from RDQL)
An RDF query language is a computer language, specifically a query language for databases, able to retrieve and manipulate data stored in Resource Description Framework format.
SPARQL is emerging as the de facto RDF query language, and is a W3C recommendation.[1] Released as a Candidate Recommendation in April 2006, it returned to Working Draft status in October 2006, due to open issues. It returned to Candidate Recommendation status in June 2007.[2] On 12 November 2007 the status of SPARQL changed into Proposed Recommendation.[3] On 15 January 2008, SPARQL was standardized.[4]
Other RDF query languages
- DQL, XML-based, queries and results expressed in DAML+OIL
- N3QL, based on Notation 3
- R-DEVICE
- RDFQ, XML-based
- RDQ, SQL-like
- RDQL, SQL-like
- RQL/RVL, SQL-like
- SeRQL, SQL-like, similar to RQL/RVL
- Versa (query language), compact syntax (non–SQL-like), solely implemented in 4Suite (Python)
- XUL has a template element in which to declare rules for matching data in RDF. XUL uses RDF extensively for databinding.
- Adenine (programming language written in RDF).
External links
- RDF Query specification
- RDF query language survey
- RDF query use cases, including query language samples
- SparQL
