What method uses Subset to access the MS SQL Server database
DATPROF Subset accesses the Source database from the Target database. There are several techniques for doing this, Ad hoc queries or linked server. What does Subset?
DATPROF Subset uses the "Ad hoc queries" to access the remote database.
Both OPENROWSET and OPENDATASOURCE are used.
To allow for these connectiontypes the database should have "Ad hoc queries" enabled.