SQL Practical Guide

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SNOMED CT Document Library

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Before importing the SNOMED CT data the import process creates a "transitive closure file". This allows this file to imported to create a transitive closure table that supports rapid subtype testing. The process that creates the transitive closure file from other release files uses the Perl language. Windows does not include a Perl language interpretterinterpreter. Strawberry Perl is a widely used free Perl environment for Window and this should be installed on your computer before running the import script.

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  • Open and run the downloaded file
    • This will have a name like "strawberry-perl-5.30.0.1-64bit.msi" (version numbers may differ).
  • Go through the installation process
    • Read and accept the license.
    • We recommend that you install in the default installation path (e.g. "C:\Strawberry)

      • You can choose a different path if preferred as the installation script will attempt to locate the file wherever it is installed on the main drive. 


        Warning
        titleWarnings

        Do not install Strawberry Perl within the SnomedRfsMySql folder as the installation will be removed by future updates to the SnomedRfsMySql package.
        Ideally you should install Strawberry Perl on drive C.


        Expand
        titleIf you need to install Perl on another disk or network drive (click here) ...

        If Perl is installed on a network oe or a secondary drive (i.e. not drive C), you need to specify that location. To do this create (or edit) a plain text file called perlPath.cfg file in the SnomedRfsMySql\win folder. This file must contain a single line of text specifying the full path of the perl.exe file (for example the file might contain the text "D:\AddedSoftware\Strawberry\perl\bin\perl.exe")

        If the import script cannot find perl.exe at the location specified in the perlPath.cfg file, that configuration file will be deleted and will need to be recreated with the correct full path to perl.exe.






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  • When the installation is complete, you can test the installation by running the the following command in a newly opened Command Prompt.

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