I'm using Delphi with an MS Access Database.
I have two tables
Grade | Name
Grade 2 | John
Grade 7 |
Grade 3 | Mary
Now for some reason, in Delphi, once a cell is modified, it will not let me change it to a BLANK cell again.
Yes these two tables are in a relationship.
But Delphi is OK with the cell being a blank cell--BEFORE a change is propagated. But once you propagate a change, and try to go blank again, you get the error message in the Title of this thread.
This is obviously because, there is no blank cells in table KIDS NAMES.
So how do i find a way to specify that I do not wish to assign a kid to GRADE 7 at this time. e.g. i want to leave it blank for now...?