he DIMSUM project is developing a flexible distributed database architecture that can adjust to a wide range of application, system, and network properties. This work entails revisiting and reassessing many of the fundamental design decisions that have been made in the current generations of relational and object-oriented systems. The goal is to develop technology that will serve as the underpinnings for the next generation of high-performance object-relational database systems. Our current efforts include:

• Reactive Query Processing: Techniques for coping with plans to cope with unexpected delays in wide-area distributed information systems. This includes Query Scrambling: an adaptive, on-the-fly approach for restructuring complex query executions, and XJoin: a small footprint, multithreaded non-blocking operator that streams answers to users.
• Client-Server Query Execution: data- vs. query-shipping; interaction of query execution and caching; and integrated support for both associative and navigational access.
• Semantic Caching: Orgainization and management of client caches based on query specifications.

Project Overview Har Gua Shrimp Dumplings	Group Members Daan Tart Custard Tarts	Recent Papers Chun Kuen Fried Spring Rolls
Sponsors Siu Mei Meat Dumplings	DIMSUM Lab Cheung Fun Steamed Rice Flour Rolls	The Real Thing Cha Siu Bau Steamed Barbecued Pork Bun

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