1. 1 David Maier Net Data Management Issues Stream processing components –alerters –accumulators –semantic routers Sharing of resources across requests –people in same context want similar info –but may request via a different route or service Peer-to-peer sharing of context – pass context and recent history device-to-device –don’t want to synchronize with “home” server

2. 2 David Maier “Uncoordinated” Queries –traditional methods for distributed query processing don’t scale well –goal: Distributed execution with local state Query revision –construct reasonable answers quickly –revise answers as new info arrives –key: determine what constitutes a significant change

3. 3 David Maier Context capture –remember context and user activity when information is accessed “Find me the article I was reading on the flight to Atlanta last fall”