A Source Tagging Theory for Heterogeneous Database Systems

A Polygen Model for Heterogeneous Database Systems: The Source Tagging Perspective

This paper studies heterogeneous database systems from the multiple (poly) source @rrt) perspective. It aims at addressing issues such as “where is the data from” and “which intermediate data sources were used to arrive at that data” issues which are critical to many users in utilizing information composed from multiple sources. Specifically, it presents a polygen model for resolving the Data S...

A Polygen Model for Developing Heterogeneous Database Systems With Source Tagging Capabilities

A New Approach for Knowledge Based Systems Reduction using Rough Sets Theory (RESEARCH NOTE)

Problem of knowledge analysis for decision support system is the most difficult task of information systems. This paper presents a new approach based on notions of mathematical theory of Rough Sets to solve this problem. Using these concepts a systematic approach has been developed to reduce the size of decision database and extract reduced rules set from vague and uncertain data. The method ha...

Scaling Access to Heterogeneous Data Sources withDiscoDRAFT { NOT FOR DISTRIBUTION { SEE TKDE 1998 FOR FINAL

1 Scaling Access to Heterogeneous Data Sources with Disco DRAFT { NOT FOR DISTRIBUTION { SEE TKDE 1998 FOR FINAL VERSION Anthony Tomasic, Louiqa Raschid and Patrick Valduriez Abstract|Accessing many data sources aggravates problems for users of heterogeneous distributed databases. Database administrators must deal with fragile mediators, that is, mediators with schemas and views that must be si...

Schema Evolution in Heterogeneous Database Architectures, A Schema Transformation Approach

From: ‘Advanced Information Systems Engineering’, 14th International Conference, CAiSE 2002, A. Banks Pidduck et al (Eds), Springer Verlag LNCS 2348, Pages 484-499, 2002 This paper presents a new approach to schema evolution, which combines the activities of schema integration and schema evolution into one framework. In previous work we have developed a general framework to support schema trans...