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SPARQL Update

OC Working Group, 2012-02-16

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The Big SPARQL picture

• SPARQL 1.0 (2008 Recommendation)

– SELECT

– ASK

– DESCRIBE

– CONSTRUCT

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The Big SPARQL 1.1 Picture

• SPARQL 1.1 (2012 Draft)

– UPDATE

• Triple management (Load, Clear, Insert, Delete)

• Graph management (Create, Drop, Copy, Move,

Add )

– Graph Store HTTP Protocol

– Service descriptions

– Entailments

– Basic federated query

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Load – Clear – Insert - Delete

• LOAD uri [ INTO GRAPH uri ]

• CLEAR GRAPH uri

• INSERT DATA { quads }

• DELETE DATA { quads }

• UPDATE: WITH uri1 DELETE {quad_pattern}

INSERT {quad_pattern} USING uri1 WHERE

{group_graph_pattern}

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WITH and USING

• WITH uri

• USING uri

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Update - Example

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PREFIX foaf: <http://xmlns.com/foaf/0.1/>

WITH <http://example/addresses>

DELETE { ?person foaf:firstName 'Bill' }

INSERT { ?person foaf:firstName 'William' }

USING <http://example/addresses>

WHERE

{

?person a foaf:Person .

?person foaf:firstName 'Bill'

}

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Drop, Create, Copy, Move, Add

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• CREATE [ SILENT ] GRAPH uri

• DROP [ SILENT ] GRAPH uri

• COPY [ SILENT ] GRAPH uri1 TO GRAPH

uri2

• MOVE [ SILENT ] GRAPH uri1 TO GRAPH

uri2

• ADD [ SILENT ] GRAPH uri1 TO GRAPH

uri2

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Additional Material

• W3C SPARQL, http://www.w3.org/TR/rdf-sparql-query/

• W3C SPARQL 1.1 http://www.w3.org/TR/sparql11-query/

• W3C SPARQL Update http://www.w3.org/TR/sparql11-update/

• SPARQL by example

http://www.cambridgesemantics.com/2008/09/sparql-by-example/

• SPARQL Cheatsheet http://www.slideshare.net/LeeFeigenbaum/sparql-

cheat-sheet

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