Persistence - II
A storage home defines an interface for managing instances of a specified storage type.
A storage home definitions can introduce a primary key definition. This produces a factory, finder, and destructor operations related to this primary key definition.
A storage home interface includes operations to create storage objects, find incarnations of storage objects, and destroy instances of the storage type associated with the manager.
A storage home is responsible for maintaining mapping between primary key values and storage objects.
On creation of a storage object, storage home assigns a persistent id (unique into Persistent Store) and StorageHomeBase.