Unfortunately this is not supported by Telerik Data Access. You can map one or more tables to one class, but you cannot map one table to more than one class. The only workaround is to use a Flat Inheritance, but it also needs a specific column in the table which is mapped to the base class. But as I understand the database is legacy and you will not be able to create a new column, so in your case, the only workaround is not applicable.
If there is anything else for which we can help, do not hesitate to contact us again.
OpenAccess ORM is now Telerik Data Access
. For more information on the new names, please, check out the Telerik Product Map