The Column Permissions dialog has the following components:
This user has the following column permissions Lists columns and type of permissions the selected user has on each column in the table. You can click in the fields beside each column to grant or revoke permissions; double-clicking (so that a checkmark and two + signs appear) gives the user grant options for the permission.
Details Displays the Column Details dialog for the selected column. The Column Details dialog shows the name, type, primary key, unique constraints, whether NULLs are allowed, and comment for the selected column.