Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Part Geometry Data in the AMRF

Published

Author(s)

J Tu, Ted Hopp

Abstract

Partitioning and replication of data are very important concepts in logical database design of both centralized and distributed databases. It is very important that the relationships among the vertical and/or horizontal partitions of a relation and the information about data replication be explicitly modeled and dynamically maintained so that their integrity and consistency can be automatically enforced by a DBMS or a distributed DBMS. In this paper, we present an extended generalization concept and show how it can be used to explicitly model various types of data partitions with or without replication. Storage operation rules for these partition types are defined for integrity control purposes and rules for modifying the schema at run time, when partitions are dynamically created or modified, are also presented. Integrity control can be enforced by following the modified model and constraints of these partitions.
Citation
NIST Interagency/Internal Report (NISTIR) - 3551
Report Number
3551

Keywords

DBMS, part geometry data, AMRF, model

Citation

Tu, J. and Hopp, T. (1987), Part Geometry Data in the AMRF, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=821551 (Accessed October 31, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created December 31, 1986, Updated October 12, 2021