Both Hibernate and EDM can
handle inheritance hierarchies and polymorphic
associations to them
Both Hibernate and EDM
provide single-table and multiple-tables per hierarchy solutions
◦Single-table: columns for all subtypes, null values if not
appropriate to row’s subtype
◦Multiple-table: table for common (superclass) properties, table
for each subclass for its specific properties, foreign
key to top table
◦Also hybrid: common table plus separate tables for some
subclasses