n is either 1 or 0. The default value is 1.
When DDLFinal is enabled (n = 1), a class created by a DDL CREATE TABLE statement is final, meaning it cannot have subclasses.
Changing This Parameter
You can also change DDLFinal with the Config.SQL class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).