Abstract
Up to now in the field of temporal database systems there have been investigated 3 kinds of time: valid time, transaction time and indeterminate valid time. Indeterminate valid time serves to describe the timestamps and possibility event occurrences in the future. In this paper the author assumes that in distributed temporal database systems it often happens that for the same event the sites may associate different scenarios in their fragments. Thus after making the union of these fragments there may exist such inconsistency that the proper scenario for the event is not known. The author proposes solving of this kind of uncertainty by developing a representation of the tuples representing the scenarios of this event. For this purpose a distance function between tuples referring to the same event is defined, and the representation choice functions are proposed and analyzed. Next an algorithm is worked out and some of its properties are given.
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Nguyen, N.T. (2001). Representation Choice Methods as the Tool for Solving Uncertainty in Distributed Temporal Database Systems with Indeterminate Valid Time. In: Monostori, L., Váncza, J., Ali, M. (eds) Engineering of Intelligent Systems. IEA/AIE 2001. Lecture Notes in Computer Science(), vol 2070. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45517-5_49
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DOI: https://doi.org/10.1007/3-540-45517-5_49
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