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Valid Time
[chapter]
2009
Encyclopedia of Database Systems
Preserved Fulltext
In valid-time indeterminacy, it is known that an event stored in a temporal database did in fact occur, but it is not known exactly when the event occurred. We present an extension of the tuple-timestamped temporal data model, called the the possible chronons data model, to support valid-time indeterminacy In the possible chronons data model, each event is represented with a set of possible chronons, delimiting when the event might have occurred, and a probability distribution over that set. We
doi:10.1007/978-0-387-39940-9_1066
fatcat:aijktxmmcjhbxpv36owdl47hkm