How to implement SQL Over-ride on Source Tables in OWB?

How can we acheive SQL-Override feature similar to the one available in informatica on OWB.
We are thinking of using a view to filter the required data.And defiinig the view as the source in the mapping.
Is this the best approach to go by,any thoughts suggestions?

Informatica is a pipelined client/server ETL tool which means that if you read from a table and then apply a filter it will read all of the data onto the client (i.e. the application server, not a user machine) and then filter the data so it is not unusual for developers to want to put a lot of the logic into the SQL to reduce the number of records (which sort of defies the purpose of using the tool in the first place).
OWB is more of a ELT/code generator so if you create a similar mapping with a table and filter it will generate the SQL with the filter included. To be honest, I'm not 100% sure about this bit but I believe if you have a source via dblink (or even ODBC) then that full generated SQL should be sent to the source. In other words, although some people might be more comfortable with custom SQL I dont think it is actually necessary in most if not all cases.

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