Abstract
VIDEBAS is a relational multi-user database management system. Relations are stored, in general, more than one time, each time however in a different sort order. The main goal of this approach is to reduce the number of accesses necessary to handle a query at the cost of a higher charge on external memory. The consistency problems connected to redundancy are prevented by inserting all subsequent changes to a relation in the corresponding differential file. In this paper the performance of VIDEBAS will be compared with SYSTEM R. The only operations considered are an one-relational query and an equijoin of two relations. The differential files will not be taken into account. The criteria for comparison are the internal and external memory occupation and the number of page accesses needed to obtain the answer.
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References
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© 1983 Springer-Verlag Berlin Heidelberg
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Blanken, H.M. (1983). Performance Evaluation of Videbas. In: Kühn, P.J., Schulz, K.M. (eds) Messung, Modellierung und Bewertung von Rechensystemen. Informatik-Fachberichte, vol 61. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68830-0_16
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DOI: https://doi.org/10.1007/978-3-642-68830-0_16
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-11990-6
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