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Query Results over Ongoing Databases that Remain Valid as Time Passes By (Extended Version)
Yvonne Mülle, Michael H. Böhlen
Ongoing time point now is used to state that a tuple is valid from the start point onward. For database systems ongoing time points have far-reaching implications since they change…
Lineage-Aware Temporal Windows: Supporting Set Operations in Temporal-Probabilistic Databases
Katerina Papaioannou, Martin Theobald, Michael H. Böhlen
In temporal-probabilistic (TP) databases, the combination of the temporal and the probabilistic dimension adds significant overhead to the computation of set operations. Although s…
Generalized Lineage-Aware Temporal Windows: Supporting Outer and Anti Joins in Temporal-Probabilistic Databases
Katerina Papaioannou, Martin Theobald, Michael Böhlen
The result of a temporal-probabilistic (TP) join with negation includes, at each time point, the probability with which a tuple of a positive relation matches none of the…