See the Javadocs in <EPM_ORACLE_HOME>/common/docs/ReportingAnalysis/SDK/javadoc.
This interface is the artifact wrapper around the Interactive Reporting database connection that is imported to the repository. It provides methods to retrieve or set properties for the Interactive Reporting database connection, such as the default database user name and password to be used. It also provides methods to set the Interactive Reporting database connection to prompt users for the database user name and password and to enable the single sign‑on feature for this Interactive Reporting database connection.