I have been having all sorts of trouble upgrading from ZODBCDA to ZmxODBC. The ZODBCDA users RDB.DatabaseResults and ZmxODBC (modified from ZOracleDA) uses Results.Results. These two classes seem to do exactly the same purpose and so I suppose one shouldn't exist. The important point is that handle NULL values very differently. Results let them pass through as None values whereas DatabaseResults change them to the special value MissingValue. MissingValue is nice becuase its string representation is an empty string which is nice on html forms etc. Why doesn't Results do this too? What is the official word on what a DA should be returning for NULLs? ---- Dylan Jay Tel: +61 2 9886-8961 Avaya Communication FAX: +61 2 9352 9224 Level 5, 15 Talavera Road Mobile:+61 409 606 171 Nth Ryde, NSW, 2113 ICQ: 520341 AUSTRALIA