Use the Primary Key page of the Create Table SmartGuide to
specify the primary key for the table that you're creating. A
primary key is a column or set of columns that can be used to identify or
access a particular row or rows. A primary key is a unique key, that is
it is a key that is constrained so that no two of its values are equal.
A table cannot have more than one primary key, and the columns of a primary
key cannot contain null values. To change a column to be nonnullable,
use the Change Column window from the Edit Columns page.
Fields and controls
Related information