Welcome to the InfoSci Platform
Reference Hub1
A Methodology of Constructing Canonical Form Database Schemas in a Multiple Heterogeneous Database Environment

A Methodology of Constructing Canonical Form Database Schemas in a Multiple Heterogeneous Database Environment

Jeongseok Lim, Dong-Guk Shin
Copyright: © 1998 |Volume: 9 |Issue: 4 |Pages: 8
ISSN: 1063-8016|EISSN: 1533-8010|EISBN13: 9781466638075|DOI: 10.4018/jdm.1998100101
Cite Article Cite Article

MLA

Lim, Jeongseok, and Dong-Guk Shin. "A Methodology of Constructing Canonical Form Database Schemas in a Multiple Heterogeneous Database Environment." JDM vol.9, no.4 1998: pp.4-11. http://doi.org/10.4018/jdm.1998100101

APA

Lim, J. & Shin, D. (1998). A Methodology of Constructing Canonical Form Database Schemas in a Multiple Heterogeneous Database Environment. Journal of Database Management (JDM), 9(4), 4-11. http://doi.org/10.4018/jdm.1998100101

Chicago

Lim, Jeongseok, and Dong-Guk Shin. "A Methodology of Constructing Canonical Form Database Schemas in a Multiple Heterogeneous Database Environment," Journal of Database Management (JDM) 9, no.4: 4-11. http://doi.org/10.4018/jdm.1998100101

Export Reference

Mendeley
Favorite Full-Issue Download

Abstract

The Query Clearing House (QCH) model aims at achieving an ideal heterogeneous multiple database environment in which users can submit queries without concern for the location of the data or the specifics of the relevant database schemas. One important prerequisite for building such an environment is to organize local database schemas in a cohesive way so that a systematic method of determining data relevancy can be developed. In this paper, we propose a method for converting multiple local relational schemas into canonical form expressions. The resulting canonical form schema expressions include much more descriptive data semantics than what is offered by the original database schemas. These expressions also include information for mapping between the terms used in the canonical form expressions and their counterparts implemented in local databases. We include a number of examples illustrating how the canonical form schema expressions are produced.

Request Access

You do not own this content. Please login to recommend this title to your institution's librarian or purchase it from the IGI Global bookstore.