I have a problem with PowerDesigner. It doesn't generate AUTO_INCREMENT option for primary columns.
I have int column with Primary key checked in my table, but in generated script there's no AUTO_INCREMENT. DBMS is Microsoft SQL Server 2012.
A primary key identifies the row. There are plenty of options apart from auto_increment columns, including composite key, values provided from external systems.
The Identity
property on the column triggers the generation of the identity keyword in the script.