The General tab of the New Column property sheet has the following components:
Name Enter a name for the column.
Type Select a data type from the dropdown list.
Size/Precision Specify the size of the column for binary or char types, or the precision for numeric types.
Scale Specify the scale value for a numeric column.
Column allows null values Check this option to allow null values. Null values are not permitted in primary keys.
Column default Set a default value for the column.
Default Select a default value for the column from the list, or choose Specify value... to set a constant value.
Value Specify the column value. This option is only available when Specify value is selected as the default value.
Partition size (optional) Specify the partition size. The partition size restricts the maximum value that global autoincrement can use. This option is only available when Global autoincrement is selected as the default value.