When attempting to discover a Microsoft SQL Server 2008 SP3 (Enterprise Edition)
none of the "Primary Data Files" were discovered for the databases/modules.
It was discovered that the "VIEW_ANY_DEFINITION" permission was missing from the service account. The only permission specified in the Sensor Guide was "db_datareader"
Resolving the problem
Add the "VIEW_ANY_DEFINITION" permission to the service account user.