- open the attached database document
- open the contained form for editing
- put the focus into the "remarks" control, enter some text
- press the "Save Record" button in the toolbar
=> an error message pops up saying that the value for column "name" cannot be NULL

The appearance of this error message is actually wrong. Two setups have been
made to the database which are expected to prevent it:
- The "Form data input checks for required fields" option for the complete
  database has been set to FALSE (see Edit/Database/Advanced)
- The "Empty Field is NULL" property for the edit control which is used to
  input values for the "name" column has been set to "NO".
- (The "name" column is declared to be NOT NULL)

Because of the first option, the form controller is expected to *not* check for
required fields (which works fine, the error message comes from the back-end,
not the front-end).
Because of the second option, the edit control is expected to write an empty
string into the database, not the NULL value. Obviously, this is the point which
does not work.

To verify this: Enter a new record, with "name" *not* being empty. After you
saved this record, change name's edit control to be empty, then save the record
=> Base properly writes the empty string, instead of NULLL