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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