Paper Info
Title
A Framework For Generating And Maintaining Global Schemas In Heterogeneous Multidatabase Systems
Abstract
The problem of creating a global schema over a set of heterogeneous databases is important due the availability of multiple databases within organizations. The global schema should provide a unified representation of local heterogeneous schemas. In this paper, we provide a general framework that supports the integration of local schemas into a global one. The framework takes into consideration the fact that local schemas are autonomous and may evolve over time, which makes the definition of the global schema obsolete. We define a set of integration operators that integrates local schemas based on the semantic relevance of their classes, and provide a model-independent representation of virtual classes of the global schema. We also define a set of modifications that can be applied to local schemas as a consequence of their local autonomy. For every local modification, we define a propagation rule that will automatically disseminate the effects of that modification to the global schema without having to regenerate it from scratch via integration.
Year
DOI
Venue
2003
10.1109/IRI.2003.1251414
PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL CONFERENCE ON INFORMATION REUSE AND INTEGRATION
Keywords
Field
DocType
multidatabase, schema integration, database autonomy, schema evolution
Data mining,Conceptual schema,Star schema,Schema migration,Computer science,Theoretical computer science,Database schema,Dissemination,Information schema,Distributed database,Schema (psychology),Distributed computing
Conference
Citations 
PageRank 
References 
0
0.34
12
Authors
1
Name
Order
Citations
PageRank
Rehab M. Duwairi18510.79