Hi Swathy, No there no restriction in my point of view connecting to a vdb for schema profiling is a good best practice. The masking engine need only a database to connect to in order to read schémas metadata (tables in there, columns inside and there type ...), you can even drop this vdb later on once you define the masking job. Masking engine will create a dynamic connector to the new vdb you are creating and apply the same ruleset you've defined in you ruleset to mask the data. Regards, Mouhssine