TU Wien:Distributed Systems Technologies VU (Truong)/Prüfung 2011-10-21

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5 questions á 16 points

  • Data-source architectural patterns: Explain row data gateway, table data gateway, active record, data mapper
  • O/R-mapping patterns
    • Explain 3 inheritance mapping strategies
    • What problem does lazy loading solve? Explain lazy loading in general + implementation options.
  • EJB
    • expain pooling for stateful and stateless session beans, why is it necessary / how is it done?
    • illustrate the lifecycle of stateful and stateless session beans
  • MOM
    • Explain message routing, message transformation, system management
    • Briefly describe one concrete pattern from each of these families
  • Presentation: describe AJAX
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