EJB design: difference betweeen session facade and value object

  1. hi all
      what is the advantage of using value object over session facade. please let me know

  2. Value Object refers to the pattern which wraps multiple object related values into a single instance and trasmit between layers. Session facade referes to the pattern which a layer of SessionBean is used to abstract the underlying layer (e.g. EntityBeans) from the various clients (e.g. browser, application client or PDA).