Persistent classes are created and managed in the Class Builder.

To create a persistent class from the initial screen of the Object Navigator (SE80):

1. Select the category Class/Interface in from the object list.
2. Enter the name of the new class according to the naming conventions.
3. Confirm your entries with ENTER.
4. Confirm that you want to create the class.

The system displays the Create Class ... dialog box.

5. Enter the rest of the basic data for the class:

Select Persistent class as the class type.

6. Choose Save.

The Create Object Catalog Entry dialog box is displayed.

7. Enter the Package.
8. Choose Save again.

You created a persistent class (called CL class below) and defined your basic data.
The new class implements all the methods of interface IF_OS_STATE. These service methods are common to all persistent classes and are used when the object status is manipulated. The application developer can only redefine the implementation of the two methods INIT and HANDLE_EXCEPTION. The other methods are reserved for internal use.
The Class Builder automatically creates two further auxiliary classes with the new persistent class CL class. They are assigned to a separate class pool. These classes are needed for managing persistent objects using Object Services.