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Building Parameterized Canonical Representations to Achieve Interoperability among Heterogeneous Databases (1995)
BibTeX
@MISC{Chang95buildingparameterized,
author = {Yahui Chang and Louiqa Raschid},
title = {Building Parameterized Canonical Representations to Achieve Interoperability among Heterogeneous Databases},
year = {1995}
}
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Abstract
: This paper describes a technique to support interoperable query processing when multiple heterogeneous databases are accessed. We focus on the problem of supporting query transformation transparently, so a user can pose queries locally, without any need of global knowledge about different data models and schemas. To support interoperable query transformation, we need to resolve the conflicts (i.e., representational heterogeneities) for different databases. The conflicts exist because semantically equivalent concepts may be defined in different ways in each model/schema. Further, we also need to consider the conflicts due to the different query language utilized by each database. We propose two kinds of parameterized canonical representations, as a means of classifying and resolving heterogeneities. The first canonical representation resolves heterogeneity based on query languages. The second canonical form resolves representational heterogeneity based on using two different schemas/d...
Keyphrases
parameterized canonical representation heterogeneous database achieve interoperability representational heterogeneity different way different data model query language equivalent concept different query language second canonical form query transformation model schema multiple heterogeneous database interoperable query processing global knowledge different schema first canonical representation interoperable query transformation different database
