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An RDF graph is a data store which uses triplet representation to store information. The dataset can be queried using query languages like SPARQL which has lot of similarities to SQL query language of relational databases.
Linear recursive queries on graph databases
This provides a computer implementation method for executing linearly recursive queries on an RDF (Resource Description Framework) graph database using a query engine. [Solution] The method includes the steps of: obtaining a first part of a query that defines one or more initial conditions for query elements in a second part of a query on an RDF graph database as input; and obtaining at least two clauses that specify that the second part of the query is executed recursively. The first clause defines how the output of the execution of the second part of the query is used as input for the next execution of the second part of the query. The second clause includes query elements that define the second part of the query and describe how the output of the execution is queried using (i) one or more initial conditions as input for the first execution or (ii) the output of the previous execution for the next execution.
Owner:DASSAULT SYSTEMES SA