The setup database settings screen allows one you to configure the location of database drivers driver libraries for Iguana.
Iguana uses three database APIs: MySQL, Oracle OCI and Open Database Connectivity (ODBC).
Iguana automatically detects the latest installed drivers
In most cases you will not need to change these settings
You manually choose a different library if required
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How does Iguana find shared libraries?
It searches the Windows registry for installed libraries
Otherwise it checks directories in the system search path