Kluger.PA@PARC-MAXC.ARPA@sri-unix.UUCP (07/19/83)
Guy M. Lohman
Research Staff Member
IBM Research Laboratory
San Jose, CA
R* Project
The R* project was formed to address the problems of distributed
databases, with the objective of designing and building an
experimental prototype database management system which would handle
replicated and partitioned data for both query and modification. The
R* prototype supports a confederation of voluntarily cooperating,
homogeneous, relational database management systems, each with its own
data, sharing data across a communication network.
Two seemingly conflicting goals of distributed databases have been
resolved efficiently in R*: single-site image and site autonomy. To
make the system easy to use, R* presents a single-site image: a
user's request for data need not be aware of or specify either the
location or the access path for retrieving that data, requiring close
coordination among sites. On the other hand, to make local data
available even when other sites or communication lines fail, each R*
database site must be highly autonomous.
The talk will discuss how these goals were compatibly achieved in the
design and implementation of R* without sacrificing system
performance.
Thursday, July 21, 1983 4:00 pm
Stanford Park Labs
Hewlett Packard
5M Conference room
1501 Page Mill Road
*** Be sure to arrive at the building's lobby ON TIME, so that you may
be escorted to the conference room.