Open up SQL Management studio, connect to the SQL server running your System Center databases and give these queries a shot:
Use OperationsManager
Select *
From ManagedEntityGenericView
Where FullName Like '%SQLServer.Database%' AND
NOT FullName Like '%Exchange%' AND
MonitoringClassId = '10C1C7F7-BA0F-5F9B-C74A-79A891170934'
ORDER By Path
If nothing is returned, try removing the filter for the Monitoring ClassId
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Use OperationsManager
Select *
From ManagedEntityGenericView
Where FullName Like '%DBFile:%' AND
NOT FullName Like '%Exchange%'
ORDER
By Id