An exception that is thrown when two persistent classes are mapped to the same table.
A persistent class can be mapped to a specific table in a data store via the PersistentAttribute attribute. This exception is thrown if two classes exist that are mapped to the same table.
- map different classes to different tables.
A persistent class, that is a descendant of another persistent class, can be mapped to the table to which its ancestor is mapped using the MapInheritanceAttribute attribute.