Integrating linked data with relational data
First Claim
1. A method comprising:
- using a computing system having at least one processor to perform a process, the process comprising;
receiving a SQL database query language statement on a SQL database, whereinthe SQL database query language statement comprises one or more SQL query clauses and a table function that transforms at least one SPARQL endpoint into a row source for the SQL database to integrate local relational data with non-local RDF data retrieved from the one or more SPARQL endpoints, anda SPARQL query string and at least one SPARQL endpoint of one or more SPARQL endpoints are embedded in the table function of SQL database query language statement;
executing the SQL database query language statement including the table function on the SQL database to transform the at least one SPARQL endpoint into a row source for the SQL database, wherein during execution of the SQL database query language statement on the SQL database,executing the one or more SQL query clauses on the SQL database;
sending at least the SPARQL query string embedded in the SQL database query language statement to the at least one SPARQL endpoint that is embedded in the SQL database query language statement, wherein the at least one SPARQL endpoint is identified by parsing at least the table function in the SQL database query language statement that has been executed;
receiving query results from the at least one SPARQL endpoint, at least a portion of the query results corresponding to the non-local RDF data;
converting the non-local RDF data into a relational data format to generate converted RDF data; and
combining the converted RDF data with relational data from a local relational database.
1 Assignment
0 Petitions
Accused Products
Abstract
A method, system, and computer program product for accessing a SPARQL endpoint that is specified from within a SQL database query language statement. A method embodiment receives a SQL database query language statement that is then parsed in order to identify the locations of one or more SPARQL endpoints to be accessed. The database query language statement comprises operations and/or queries (e.g., SPARQL queries) to be performed over at least some linked data (e.g., queries over named RDF graphs) found at the one or more SPARQL endpoints. The database query language statement can also specify relational operations such as a relational database table operation, and/or a view operation, and/or other relational database functions that operate in conjunction with retrieved linked data.
51 Citations
20 Claims
-
1. A method comprising:
-
using a computing system having at least one processor to perform a process, the process comprising; receiving a SQL database query language statement on a SQL database, wherein the SQL database query language statement comprises one or more SQL query clauses and a table function that transforms at least one SPARQL endpoint into a row source for the SQL database to integrate local relational data with non-local RDF data retrieved from the one or more SPARQL endpoints, and a SPARQL query string and at least one SPARQL endpoint of one or more SPARQL endpoints are embedded in the table function of SQL database query language statement; executing the SQL database query language statement including the table function on the SQL database to transform the at least one SPARQL endpoint into a row source for the SQL database, wherein during execution of the SQL database query language statement on the SQL database, executing the one or more SQL query clauses on the SQL database; sending at least the SPARQL query string embedded in the SQL database query language statement to the at least one SPARQL endpoint that is embedded in the SQL database query language statement, wherein the at least one SPARQL endpoint is identified by parsing at least the table function in the SQL database query language statement that has been executed; receiving query results from the at least one SPARQL endpoint, at least a portion of the query results corresponding to the non-local RDF data; converting the non-local RDF data into a relational data format to generate converted RDF data; and combining the converted RDF data with relational data from a local relational database. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A computer program product embodied in a non-transitory computer readable medium, the computer readable medium having stored thereon a sequence of instructions which, when executed by a processor causes the processor to execute a set of acts, the set of acts comprising:
-
receiving a SQL database query language statement on a SQL database, wherein the SQL database query language statement comprises one or more SQL query clauses and a table function that transforms at least one SPARQL endpoint into a row source for the SQL database to integrate local relational data with non-local RDF data retrieved from the one or more SPARQL endpoints, and a SPARQL query string and at least one SPARQL endpoint of one or more SPARQL endpoints are embedded in the table function of SQL database query language statement; executing the SQL database query language statement including the table function on the SQL database to transform the at least one SPARQL endpoint into a row source for the SQL database, wherein during execution of the SQL database query language statement on the SQL database, executing the one or more SQL query clauses on the SQL database; sending at least the SPARQL query string embedded in the SQL database query language statement to the at least one SPARQL endpoint that is embedded in the SQL database query language statement, wherein the at least one SPARQL endpoint is identified by parsing at least the table function in the SQL database query language statement that has been executed; receiving query results from the at least one SPARQL endpoint, at least a portion of the query results corresponding to the non-local RDF data; converting the non-local RDF data into a relational data format to generate converted RDF data; and combining the converted RDF data with relational data from a local relational database. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. A computer system comprising:
-
a query processor to receive a SQL database query language statement on a SQL database, wherein the SQL database query language statement comprises one or more SQL query clauses and a table function that transforms at least one SPARQL endpoint into a row source for the SQL database to integrate local relational data with non-local RDF data retrieved from the one or more SPARQL endpoints, and a SPARQL query string and at least one SPARQL endpoint of one or more SPARQL endpoints are embedded in the table function of SQL database query language statement; an SQL database engine that executes the SQL database query language statement including the table function on the SQL database to transform the at least one SPARQL endpoint into a row source for the SQL database, wherein during execution of the SQL database query language statement on the SQL database, the SQL database engine is further configured to execute the one or more SQL query language strings on the SQL database, to send at least the SPARQL query string embedded in the SQL database query language statement to the at least one SPARQL endpoint that is embedded in the SQL database query language statement, wherein the at least one SPARQL endpoint is identified by parsing at least the table function in the SQL database query language statement that has been executed, to receive query results from the at least one SPARQL endpoint, at least a portion of the query results corresponding to the non-local RDF data, to convert the non-local RDF data into a relational data format to generate converted RDF data, and to combine the converted RDF data with relational data from a local relational database. - View Dependent Claims (20)
-
Specification