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[ DB Seminar: Friday 10/12, 1-2:30pm, 606 Soda Hall]

From: elein <elein(at)varlena(dot)com>
To: sfpug(at)postgresql(dot)org
Cc: elein <elein(at)varlena(dot)com>
Subject: [ DB Seminar: Friday 10/12, 1-2:30pm, 606 Soda Hall]
Date: 2007-10-09 21:27:18
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Lists: sfpug
The graduate DB lunch time seminars are starting up again.
Anyone is welcome.


----- Forwarded message from Alexandra Meliou <ameli(at)cs(dot)berkeley(dot)edu> -----

From: Alexandra Meliou <ameli(at)cs(dot)berkeley(dot)edu>
To: dblunch(at)triplerock(dot)CS(dot)Berkeley(dot)EDU
Subject: DB Seminar: Friday 10/12, 1-2:30pm, 606 Soda Hall

Friday, October 12th, 2007
606 Soda Hall

Martin Theobald

Title: Trio: A System for Data, Uncertainty, and Lineage

Trio is a new kind of database system that supports DBMS-style data 
management, uncertainty, and lineage in a fully integrated manner. The 
talk presents the ULDB (for Uncertainty-Lineage-Databases) data model, 
an extension of relational databases with simple yet expressive 
constructs for representing and manipulating both lineage and 
uncertainty. Uncertain data and data lineage are two important areas of 
data management that have been considered extensively in isolation, 
however many applications require the features in tandem. Fundamentally, 
lineage enables simple and consistent representation of uncertain data, 
it correlates uncertainty in query results with uncertainty in the input 
data, and query processing with lineage and uncertainty together 
presents computational benefits over treating them separately. We show 
that the ULDB representation is complete, and that it permits 
straightforward implementation of many relational operations. We also 
show how ULDBs enable a new approach to query processing in 
probabilistic databases.

Finally, we?ll have a look at the current state of our first Trio 
prototype system, dubbed Trio-One, currently being developed at 
Stanford. Trio-One, our implementation of ULDBs, is built on top of a 
conventional DBMS using data and query translation techniques together 
with a small number of stored procedures.

----- End forwarded message -----

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