You can open:
An existing mapping table class saved in the database
An existing mapping table class saved in an XML file
To open an existing mapping table class saved in the database
From the menu bar in the main window, select File > Open > Mapping Table Class. The Open Mapping Table Class dialog box opens.
In the Owner drop-down menu, select the owner of the mapping table class.
In the Mapping Table Classes folder of the catalog of the owner, select the mapping table class. The mapping table class window opens.
To open an existing mapping table class saved in an XML file
Perform this generic procedure for importing a mapping table class