...
The data source is referenced using the dataSource (data source name) parameter. The exact configuration of a data source is specific to each of the databases and application servers. A Confluence administrator must set up the configuration, and the Confluence application server must be restarted for changes to take effect. The configuration must be done very carefully as any errors in doing so, will render the data source unusable. Each database that is accessed in Confluence requires a data source configuration.
With global settings now in place, the next step is to bring you up to speed on data sources and data source profiles.