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---+ Linking ODBC-accessible Database Objects into Virtuoso

---++ Steps

   1 Start the Virtuoso Web User Interface.
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   1 Select the *Conductor* link in the left frame and login as the *dba* user.
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   1 Select the *Databases* -> *External Data Source* -> *Data Sources* tab menu items.
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   1 Select the *Connect* button for the *odbcma* ODBC to ODBC Bridge DSN.
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   1 On succesful connection, select the *Link Objects* button to obtain a list of available tables.
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   1 Select all the tables that are part of the *Northwind* catalog.
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   1 Change the Catalog for each table to be *NWIND* using the *Set All* button.
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   1 All the catalog names are changed to be *NWIND*.
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   1 Select the *Link* button to link the selected tables into Virtuoso.
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   1 On completion of the link process, the tables will be displayed in the *External Linked Objects* tab.
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   1 The linked tables can be queried by clicking on the hyperlink in the *Local Name* column of the *External Linked Objects* tab above. This loads the Virtuoso *Interactive SQL* interface with the required SQL *Select* for retrieving the remote table data. We shall use the *NWIND.odbcma.Customers* table to demonstrate this.
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   1 Click the *Execute* button to run the query and retrieve the results from the remote table.
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   1  The tables can also be viewed as part of the Virtuoso *SQL Schema Objects* under the *NWIND* catalog name.
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The link process is now complete, enabling the tables to be queried as if local to the Virtuoso instance.

---++ Related

   * [[VOSSQL2RDF][Mapping SQL Data to Linked Data Views]]
   * [[VirtODBCEntityFrameworkUsage][ Using Microsoft Entity Frameworks to Access Remote ODBC-accessible Schema Objects with Virtuoso, via an ODBC-to-ODBC Bridge]]


 CategoryDocumentation CategoryVirtuoso CategoryEntityFrameworks CategoryDotNET CategoryODBC CategoryODBCODBCBridge