Document (#15191)

Author
Kaiser, A.
Title
Zeitbezogene Datenbanksysteme : eine Bestandsaufnahme und ausgewählte Problemstellungen
Source
Herausforderungen an die Informationswirtschaft: Informationsverdichtung, Informationsbewertung und Datenvisualisierung. Proceedings des 5. Internationalen Symposiums für Informationswissenschaft (ISI'96), Humboldt-Universität zu Berlin, 17.-19. Oktober 1996. Hrsg.: J. Krause u.a
Imprint
Konstanz : Universitätsverlag
Year
1996
Pages
S.143-154
Series
Schriften zur Informationswissenschaft; Bd.27
Abstract
Der vorliegende Beitrag spezifiziert die Anforderungen, die an zeitbezogene Datenbanksysteme gestellt werden. Ausgehend von diesen Anforderungen wird untersucht, inwieweit diese mit dem relationalen Datenmodell und Standard-SQL (SQL2) zu erfüllen sind. Daran anschließend werden ein temporal erweitertes Datenmodell (BCDM) und die darauf basierende Datenbanksprache TSQL2 vorgestellt. Nach einem Vergleich der beiden Sprachen SQL2 udn TSQL2 anhand eines Beispiels wird abschließend auf einige Problemgebiete bei zeitbezogenen Datenbanksystemen näher eingegangen
Object
SQL

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