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  • VirtMySQLLinkingObjects
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  • VirtMySQLLinkingObjects
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  • %VOSWARNING% %META:TOPICPARENT{name="VirtLinkRemoteTables"}% ---+ Linking <nop>MySQL Database Objects into Virtuoso ---++ Steps 1 Start the Virtuoso Web User Interface. %BR%%BR%<img src="%ATTACHURLPATH%/VirtWebHome.png" style="wikiautogen"/>%BR%%BR% 1 Select the *Conductor* link in the left frame and login as the *dba* user. %BR%%BR%<img src="%ATTACHURLPATH%/VirtConductor.png" style="wikiautogen"/>%BR%%BR% 1 Select the *Databases* -> *External Data Source* -> *Data Sources* tab menu items. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS0.png" style="wikiautogen"/>%BR%%BR% 1 Select the *Connect* button for the *mysqlma* <nop>MySQL DSN. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS1.png" style="wikiautogen"/>%BR%%BR% 1 On succesful connection, select the *Link Objects* button to obtain a list of available tables. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS2.png" style="wikiautogen"/>%BR%%BR% 1 Select all the tables that are part of the *mysql* catalog. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS3.png" style="wikiautogen"/>%BR%%BR% 1 Ensure a primary key is assigned to all tables that are to be used in the EDM generation phase. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS4.png" style="wikiautogen"/>%BR%%BR% 1 Change the Catalog for each table to be *mysql* using the *Set All* button.%BR%%BR% 1 Select the *Link* button to link the selected tables into Virtuoso. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS5.png" style="wikiautogen"/>%BR%%BR% 1 On completion of the Link process, the tables will be displayed in the *External Linked Objects* tab. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS6.png" style="wikiautogen"/>%BR% 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 *mysql.mysqlma.artist* table to demonstrate this. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS9.png" style="wikiautogen"/>%BR%%BR% 1 Click the *Execute* button to run the query and retrieve the results from the remote table. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS10.png" style="wikiautogen"/>%BR%%BR% 1 The tables can also be viewed as part of the Virtuoso *SQL Schema Objects* under the *mysql* catalog name. %BR%%BR%<img src="%ATTACHURLPATH%/VirtLinkMYS7.png" style="wikiautogen"/>%BR% .%BR% .%BR% . %BR%<img src="%ATTACHURLPATH%/VirtLinkMYS8.png" style="wikiautogen"/>%BR%%BR% The link process is now complete enabling the tables to be queried as if part of the Virtuoso Schema. ---++ Related * [[VOSSQL2RDF][Mapping SQL Data to Linked Data Views]] * [[VirtMySQLEntityFrameworkUsage][Using Microsoft Entity Frameworks to Access MySQL Schema Objects with Virtuoso]] CategoryDocumentation CategoryVirtuoso CategoryDotNET CategoryEntityFrameworks CategoryWebSite
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  • 4c311948d7ad52fadbdde20bc3fab18e
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http://rdfs.org/si...ices#has_services
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  • VirtMySQLLinkingObjects
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  • 2017-06-13T05:39:22Z
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  • 2017-06-13T05:39:22Z
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