SCHEMA VERSIONING IN A TEMPORAL OBJECT-ORIENTED DATA MODEL

1998 ◽  
Vol 07 (03) ◽  
pp. 293-318
Author(s):  
ELLEN ROSE ◽  
ARIE SEGEV

This paper proposes a means for schema versioning in a temporal, object-oriented data model called TOODM. A data definition language (DDL) is developed to describe evolving schema definitions. This DDL incorporates the concept of time sequences to store histories of a schema's properties. Update and retrieval operators for the manipulation of the schema are also developed. The data model has been implemented as a graphical front-end to POSTGRES.

1999 ◽  
pp. 145-168 ◽  
Author(s):  
Vera Goebel ◽  
Ilan Eini ◽  
Ketil Lund ◽  
Thomas Plagemann

2002 ◽  
Vol 6 (3) ◽  
pp. 277-294 ◽  
Author(s):  
Ali Frihida ◽  
Danielle J. Marceau ◽  
Marius Theriault

Author(s):  
Elisa Bertino ◽  
Elena Ferrari ◽  
Giovanna Guerrini

1989 ◽  
Vol 7 (1) ◽  
pp. 3-35
Author(s):  
Mojtaba Mozaffari ◽  
Yuzuru Tanaka
Keyword(s):  

2012 ◽  
Vol 246-247 ◽  
pp. 744-748
Author(s):  
Yue Lin Sun ◽  
Lei Bao ◽  
Yi Hang Peng

An effective analysis of the battlefield situation and spatio-temporal data model in a sea battlefield has great significance for the commander to perceive the battlefield situation and to make the right decisions. Based on the existing spatio-temporal data model, the present paper gives a comprehensive analysis of the characteristics of sea battlefield data, and chooses the object-oriented spatio-temporal data model to modify it; at the same time this paper introduces sea battlefield space-time algebra system to define various data types formally, which lays the foundation for the establishment of the sea battlefield spatio-temporal data model.


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