An administrator needs to ensure that users do not have to enter/select Database credentials when running reports.
What must a datasource have in order to accomplish this?
No signon available to the users.
Only one signon available to the users through permissions.
At least one signon available to the users through permissions.
More than one signon available to the users through permissions.
You add signons to data source connections so that users do not have to enter database credentials when they run reports.
References: https://www.ibm.com/support/knowledgecenter/en/SSEP7J_11.0.0/com.ibm.swg.ba.cognos.ug_cra.doc/c_datasources.html