Automatically assigned DDC number: 00574

Manually assigned DDC number: 00574

Number of references: 4

Title: Managing Semantic Heterogeneity in Databases: A Theoretical Perspective

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Subject: Wwwd D. Wodtke,J. Weissenfels,G. Weikum,D. Mckay,T. Finin,T. R. Gruber,R. Neches The,B. Nebel,C. Rich,W. Swartout,J. Mylopoulos Managing Semantic Heterogeneity in Databases: A Theoretical Perspective

Description: Modern database management systems essentially solve the problem of accessing and managing large volumes of related data on a single platform, or on a cluster of tightly­coupled platforms. But many problems remain when two or more databases need to work together. A fundamental problem is raised by semantic heterogeneity -- the fact that data du­ plicated across multiple databases is represented differently in the underlying database schemas. This tutorial describes fundamental problems raised by semantic heterogeneity and surveys theoretical frameworks that can provide solutions for them. The tutorial considers the following topics: (1) repre­ sentative architectures for supporting database interoperation; (2) notions for comparing the "information capacity" of database schemas; (3) providing support for read­only integrated views of data, including the virtual and materialized approaches; (4) providing support for read­write integrated views of data, including the issue of workflows on heterogeneous databases; and (5) research and tools for accessing and effectively using meta­data, e.g., to identify the relationships between schemas of different databases.

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1997-06-03

Pubyear: 1997

Format: ps

Identifier: http://citeseer.ist.psu.edu/148590.html

Source: http://www-db.research.bell-labs.com/user/hull/public_ftp/pods97-tutorial-in-proc.ps

Language: en

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Rights: unrestricted

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