edit dbms table in rad 7.5

[john b. smith]

I'm trying to edit the mapping for java Strings in RAD7.5, which defaults to VARCHAR(250), in the mapping editor (Map.mapxmi file). With WSAD5.2.1, you can right click on an item and "open table editor." But in RAD7.5, I can't see any way to do this or something similar. I have tried to manually edit Table.ddl files, but this has not effect when the schema is exported to the dbms.

Anyone know how to edit table entry mappings in 7.5?