An Implementation of Interval Based Conceptual Model for Temporal Data

Toshiyuki AMAGASA  Masayoshi ARITSUGI  Yoshinari KANAMORI  

IEICE TRANSACTIONS on Information and Systems   Vol.E82-D   No.1   pp.136-146
Publication Date: 1999/01/25
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Issue on New Generation Database Technologies)
Category: Spatial and Temporal Databases
temporal database,  time interval,  time interval class,  temporal query,  time index,  

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This paper describes a way of implementing a conceptual model for temporal data on a commercial object database system. The implemented version is provided as a class library. The library enables applications to handle temporal data. Any application can employ the library because it does not depend on specific applications. Furthermore, we propose an enhanced version of Time Index. The index efficiently processes event queries in particular. These queries search time intervals in which given events are all valid. We also investigate the effectiveness of the enhanced Time Index.