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===Linking Tables from <nop>PostgreSQL into Virtuoso===

1. Start the Virtuoso Web User Interface.
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2. Select the **Conductor** link in the left frame and login as the **dba** user.
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3. Select the **Databases** -> **External Data Source** -> **Data Sources** tab menu items.
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4. Select the **Connect** button for the **pg7ma** <nop>PostgreSQL DSN.
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5. On successful connection, select the **Link Objects** button to obtain a list of available tables.
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6. Select all the tables that you would like to link.
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7. Change the Catalog for each table to be **PGR** using the **Set All** button.
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8. All the catalog names are changed to **PGR**.
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9. Select the **Link** button to link the selected tables into Virtuoso.
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10. On completion of the Link process, the tables will be displayed in the **External Linked Objects** tab.
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11. 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 **PGR.PGR.Customers** table to demonstrate this.
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12.  Click the **Execute** button to run the query and retrieve results from the remote table.
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13.  The tables can also be viewed as part of the Virtuoso **SQL Schema Objects** under the **PGR** catalog name.
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The Link process is now complete enabling the tables to be queried as if part of the Virtuoso Schema.