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Lifestyles - A Paradigm for the description of spatiotemporal databases (1999)
| Venue: | Department of Geoinformation. Vienna, Technical University |
| Citations: | 4 - 0 self |
BibTeX
@TECHREPORT{Medak99lifestyles-,
author = {Dipl. -ing Damir Medak and Univ. -prof Dr and Andrew Frank and Department Of and Univ. -prof Dr and Thomas Eiter},
title = {Lifestyles - A Paradigm for the description of spatiotemporal databases},
institution = {Department of Geoinformation. Vienna, Technical University},
year = {1999}
}
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Abstract
This thesis investigates operations affecting identity of objects in a spatiotemporal database, ubiquitous for future temporal geographic information systems (GIS). Two different techniques to record change in temporal databases are compared: database versioning and object versioning. We show formally that these techniques are equivalent and use conceptually simpler model of database versioning for the further development. The conceptual model of our database is based on the entity-relationship model. The complete temporal database is an append-only series of snapshots, each of which represents the state of the universe of discourse at a particular moment on the time scale. Each snapshot consists of a set of objects connected with relations. Objects are metaphorically perceived as having life: an object has its birth or creation, its life or existence, its death or destruction. The central concept in the life of an object is its identifier, which is unchanged from the birth to the death
Keyphrases
spatiotemporal database central concept temporal database complete temporal database simpler model time scale append-only series snapshot consists particular moment entity-relationship model future temporal geographic information system different technique object versioning database versioning conceptual model
