Home Interface - II
When the primary key is specified, then the specialized create(), find(), destroy() and get_primary_key() operations are defined.
Primary key value uniquely identifies a component instance in the context of the home. The implementation of Home keeps the association between the primary key value and the component instance.
create() operation creates a component instance.
home definition can also contain factory and finder definitions to specify a factory and finder operations. These descriptions contain the name and parameters of the operation.