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Component categories
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service : stateless, transient, no primary key.
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session : conversational, transient, no primary key (Session in EJB)
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process : durable, persistent, no primary key
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entity : durable, persistent, primary key (Entity in EJB)
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Component implementation is distributed with a deployment descriptor specifying the required CORBA services such as transaction, security, notification and persistence.
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Container supports interfaces to the component to provide required services.
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A container integrates transaction, security, events and persistence into a component's behavior at runtime.
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