Multiple interfaces
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CORBA Component model uses facet definition and component can implements multiple interfaces.
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Beans can implement multiple interfaces.
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Uses Relationship:
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Uses relationship description is defined in CORBA Component model with receptacles so that two or more component can be connected to each other and invoke operations based on the interface type.
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CORBA Component model introduces an event model and components can be connected to each other with these event channels. EJB most likely will promote JMS in this area. But there is no specific design for event based connection of components.
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