This is a 5 minute screencast on how to use the Knowledge Discovery area of Knowledge Base creation and management in Data Quality Service (client) for SQL Server 2012 RC0.  The heart of the Knowledge Discovery area is the Manage Domain Value section, where you work with the results of the ‘found’ possible domain values by choosing to add, exclude,  or mark them as invalid, etc…This helps you improve the quality of data for the selected domain.  The idea is that after you add information about domain values to your Knowledge Base you can publish the results as part of your Knowledge Base, which you then can use on one or more Data Quality cleansing projects.