Conclusions

• Integration architecture [JIIS’97]

  • Framework (three main challenges)
  • Query processing and optimization architecture [SIGMOD’98]
  • Wrapper architecture and implementation [SIGMOD’97]

• Integration languages [SIGMOD’99] [unpublished]

• Capability-based rewriting

  • For XML-like languages [SIGMOD’99]
    • In the presence of structural constraints (DTD)
  • For more expressive languages [VLDB’97] [JLP]

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