Path: utzoo!attcan!uunet!odi!jack
From: jack@odi.com (Jack Orenstein)
Newsgroups: comp.databases
Subject: Re: Seeking info on data-merging in heterogeneous databases
Keywords: heterogeneous distributed databases, data-merging
Message-ID: <1989Nov19.182730.708@odi.com>
Date: 19 Nov 89 18:27:30 GMT
References: <17130@netnews.upenn.edu>
Reply-To: jack@odi.com (Jack Orenstein)
Distribution: na
Organization: Object Design Inc., Burlington, MA
Lines: 20

In article <17130@netnews.upenn.edu> resnik@grad1.cis.upenn.edu () writes:
>I'm looking for references to work on querying independent,
>heterogeneous databases.  I know there is research out there on
>database integration, creating a "monolithic" global interface in which
>queries are expressed in a universal language; however, that's not
>what I'm after.  Rather, I'm seeking references to research along the
>lines of what's been called the "federated" approach, in which no
>global schema is created in advance.

Check out the work on the Multibase project, done several years ago by
the research division of CCA, (now Xerox Advanced Information
Technology). There were papers published in various conferences
(SIGMOD, VLDB), and XAIT can also provide you with technical reports.
Write to them at 4 Cambridge Center, Cambridge MA, 02142.

Multibase did use a global schema, but it was created after the fact.


Jack Orenstein
Object Design, Inc.