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Database constraints, such as "patients with the same symptoms get the same therapies", may be modeled by means of functional dependencies (FD). They have been extended to represent temporal constraints such as "patients with the same symptoms and the same administered therapies, receive in the next period the same therapies". These constraints are called temporal functional dependencies...
Temporal Functional Dependencies (TFDs for short) are functional dependencies that predicate on temporal databases characterized by a special temporal dimension called valid time (VT). In [1] Combi et al. proposed a uniform framework that subsumes many of the TFDs proposed in literature and, by the combination of them, allow us to express finer constraints. Some interesting constraints are the Temporally...
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