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SPARQL

  • 网络查询语言；资源描述框架查询语言；本体查询语言

SPARQLSPARQL
网络释义

SPARQL

查询语言

SparQL 协议和 RDF 查询语言（SparQL）于2008年1月15日正式成为一项W3C推荐标准。SparQL 构建在以前的 RDF 查询语 …

资源描述框架查询语言

数据库术语... ... Social Network 社会网络 SPARQL 资源描述框架查询语言 Surface Web 浅层网络 ...

本体查询语言

2.4 本体查询语言（SPARQL）32-342.4.1 SPARQL 概述32-33 2.4.2 SPARQL 基本语法33-34 2.5 Protégé 本体编辑工具34-35 …

存取机制

...数据的一致化语义描述方法(RDFS/OWL)和统一存取机制(SPARQL)进行语义化组织的方法。

例句：
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Its syntax is similar to that of SQL, and SPARQL queries consist of a series of triple patterns and modifiers.
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SPARQL, depending on the engine that you run it against, can be completely distributed through something known as the linked data effect.
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Defined as "a repository of RDF graphs managed by a single service" it serves as the endpoint to which any SPARQL statement will be posted.
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So far, you've seen two ways to run a simple SPARQL query: using the command-line sparql utility, and using Java code with the Jena API.
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Your first thought when comparing the two listings is likely to be that the SPARQL version clearly has many more lines than the SQL version.
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Alternatively, named graphs can be provided to the sparql command with --named URL, with the URL giving the location of the graph.
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There's a lot more to SPARQL than it is possible to cover here, so do use the Resources below to find out more about SPARQL's features.
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The FILTER keyword in SPARQL restricts the results of a query by imposing constraints on values of bound variables.
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Several utilities are available to expose existing data as a Web endpoint queryable through SPARQL, the query language of the Semantic Web.
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The next line of the SPARQL code describes the query request.
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This endpoint is identified by a URL passed as an argument when you create the SPARQLWrapper object stored in the script's sparql object.
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The core standards are RDF for representation, SPARQL for querying, RDFS for structuring, and OWL for structuring and reasoning.
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Moving beyond linkedmdb. org, you can find other public SPARQL endpoints that give you access to a wider range of data.
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To fully embrace the Semantic Web idea, you can apply traditional Web-development techniques to RDF data using SPARQL.
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SPARQL query tool: Experiment with this demo provided by the author.

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