Maybe I just have a setting wrong, but I have been trying to add a row to a table using the Content tab. If the table has an identity column in it, I get an error when I click Insert to add the row. The error indicates that you can not insert a value into an identity column.
I have tried this on a DB2 table and a SQL Server table. Handling identity columns and not trying to insert values into them seems pretty basic, so I'm guessing I'm doing something wrong - just can't figure out what it is.