DATABASE RESEARCH GROUP SEMINAR
Maintaining Temporal Coherency in Virtual Data Warehouses
by Prof. Krithi Ramamritham
University of Massachussetts
Date: Monday, March 1, 1999
Time: 3:00 PM to 4:00 PM
Place: Rm. 101 - COC
ABSTRACT:
In Electronic Commerce applications such as stock trading, there is a
need to make decisions based on information collected from various
sources. Many of these sources are accessible from the World Wide
Web. Because the information such as stock prices keep changing, it is
important to maintain temporal coherency of the data presented to a
client so as to avoid making decisions based on stale
information. This translates to solving the problem of timely updates
to a client's cache (which could be viewed as a virtual data
warehouse). In this talk, we will present approaches for maintaining
the temporal coherency of data in a virtual warehouse using stock
trading data as the motivating example.
Krithi Ramamritham:
Prof. Ramamritham received the Ph.D. in Computer Science from the
real-time systems, transaction processing in database systems, and
real-time databases systems. A Fellow of the IEEE, he has served as
Program Chair and General Chair for the Real-Time Systems Symposium in
1994 and 1995 respectively. He has co-authored two IEEE tutorial texts
on real-time systems, a text on advances in database transaction
processing, and a text on scheduling in real-time systems.
Contact: Sham Navathe