Point-based temporal data; Snapshot data
Downward inheritance. The downward inheritance property implies that one can infer from temporal data d that holds at valid time t (where t is a time period) and that d holds in any subperiod (and sub-point) of t.
Upward inheritance. The upward inheritance property implies that one can infer from temporal data d that holds at two consecutive or overlapping time periods t1 and t2 and that d holds in the union time period t1 ∪ t2.
Atelic data is differentiated from telic data, in which neither upward nor downward inheritance holds.
Starting from Aristotle , researchers in areas such as philosophy,...